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Vegetables are a common food source for human health. All vegetable crops are very important for serving different nutrients to humans. Vegetables absorb necessary nutrients and contaminants from the soil. The introduction of heavy metals into soil and aquatic bodies has become a serious problem around the world. Heavy metals are introduced into the environment through a variety of natural and anthropogenic activities. Irrigation with untreated wastewater is the main reason for the accumulation of heavy metals in vegetable crops. This untreated wastewater is released through different anthropogenic activities. Heavy metals have been removed from wastewater using different physical, chemical, and biological methods. Food security and human health have both been jeopardised in recent decades as a result of the contamination of food crops by various contaminants. This article addressed a brief review of heavy metals contamination in vegetable crops, human health risks, techniques for removing heavy metals, and some important current studies. [ABSTRACT FROM AUTHOR]

Road construction involves activities that emit pollutants, including particulate matter, which harms humans. This study determined and compared particulate matter (PM1.0, PM2.5 and PM10) levels and air quality index (AQI) at unpaved roads, asphalt overlay, chip-sealed and asphalt-producing sites in Ghana and the health risks posed by their exposure. It was conducted in the Ashanti and Ahafo Regions, Ghana and was cross-sectional using the low-cost sensor, PCE-RCM16. Data collection took place, January-May, 2020. The asphalt-producing, asphalt overlay, chip-sealed and unpaved road sites had mean PM10 concentrations of 12.7-fold, 7.4-fold, 6.1-fold and 2.6-fold respectively of the 2021 World Health Organisation (WHO) air quality guideline (AQG) daily limit, 45 μg m−3. The mean PM2.5 concentrations were 30.4-fold, 17.2-fold, 14.1-fold and 6.1-fold greater than the daily AQG limit, 15 μg m−3 respectively. The mean PM1.0 values were of grave concern. Using the AQI, the asphalt-producing and asphalt overlay sites were considered "hazardous", chip-sealed site was "very unhealthy" and the unpaved sites were "unhealthy for sensitive groups". Type of activity influenced pollution levels (p < 0.01). All the sites were polluted above the WHO limits. Authorities should ensure the wearing of personal protective equipment, strict adherence to the WHO AQG and apply appropriate sanctions to offending firms/workers. [ABSTRACT FROM AUTHOR]

This study aimed to assess the human health risks associated with groundwater consumption in Abakaliki Metropolis using Water Quality Index (WQI) and HERisk code. Groundwater samples (n = 32) obtained from boreholes were analysed for pH, Zn, Pb. Fe, Cr and NO3 to evaluate both non-carcinogenic and carcinogenic health risks. The average concentrations of these parameters, except Pb (0.02 mg/L) and Cr (0.06 mg/L), were within permissible limits. The distribution of the average concentrations of the parameters followed the order: Zn > Cr > Fe > NO3 > Pb. The WQI ranged from 0.15 to 505.67 classifying 12.50% of the water samples as excellent sources of drinking water, 9.38% as good, 9.38% as poor, 12.50% as very poor and 56.25% unfit for drinking. The HERisk code revealed significant non-carcinogenic and carcinogenic health risks exceeding safety limits (< 1 × 106–1 × 104), especially for children. A linear regression model showed a relatively strong correlation between WQI and HERisk code (R2 = 0.6824) for oral exposure route, highlighting the potential health hazards of consuming contaminated groundwater. This study has contributed to understanding the health risks posed by heavy metals, particularly Pb and Cr, in Abakaliki Metropolis, guiding future interventions and public health policies. Highlights: Pb and Cr are identified as some of the most significant heavy metals impacting water quality in Abakaliki metropolis Children exhibited greater vulnerability to health risks when compared to adults in Abakaliki metropolis This study emphasizes the importance of safer water usage practises [ABSTRACT FROM AUTHOR]

Riverine contamination of metals and metalloids is a growing global concern. However, our understanding of how cascade reservoirs influence the fate of these pollutants remains limited. In this study, we focused on the Jinsha River, a typical large river polluted with metal(loid)s in Southwest China, to investigate the partitioning and transport of these substances from the upper natural reaches to the lower cascade reservoirs-regulated reaches during both flood and dry seasons. Results revealed that the rapid urbanization and industrial development following the construction of reservoirs led to significant copper (Cu), nickel (Ni), lead (Pb), chromium (Cr), and cadmium (Cd) pollution. Through various analytical techniques such as correlation analysis, principal component analysis, redundancy analysis, and structural equation modeling, we determined that reservoirs had a profound impact on solid-associated parameters, including particulate organic matter (POM), suspended solid concentration (SSC), and median particle diameter (D50). These parameters, in turn, affected the fate of metal(loid)s through processes like sorption-desorption and dissolution-precipitation. High POM concentrations and low SSC and D50 values resulted in the precipitation of most particulate metal(loid)s, thereby reducing their transport across reservoirs. As river water moved downstream across the reservoirs, the percentage of particulate metal(loid)s decreased by 6.1% for arsenic (As), 38.3% for Cu, 74.9% for Ni, 36.8% for Cr, 17.8% for Cd, and 41.9% for Pb, respectively. Furthermore, the cascade reservoirs had cumulative effects on the deposition of particulate metal(loid)s, particularly concerning Cr, Cd, and Pb in the final reservoirs. Human health risk assessments indicated that dissolved As and Pb posed potential non-carcinogenic threats to residents. Despite the fact that reservoirs captured most particulate metal(loid)s, the transport of dissolved As and Pb across the reservoirs still impacted the safety of downstream drinking water. Therefore, in cascade reservoir systems, the concern regarding dissolved metal(loid) pollution remains a priority for future reservoir management. [ABSTRACT FROM AUTHOR]

Timor Island is located in a geologically complex region strongly affected by the collision of the Australian margin with the Banda volcanic arc. In Oecusse, an enclave of East Timor in the western part of Timor, crop out several lithological units of the Banda Terrane that are associated with the obduction of oceanic crust and upper mantle on the Australian continental crust. This study reports the geochemistry of stream sediments from the coastal region of the Oecusse enclave, where the Banda Terrane is best represented, employing statistical analyses to discern the sources of metal(oid)s and assessing ecological and health risks. Arsenic, Cr, and Ni are the elements with higher potential ecological risk factors. The potential ecological risk index (PERI), which combines single indexes of ecological risk factors for multiple elements, is very high in a stream sourced by the Lolotoi-Mutis Complex. Significant risks for human health were found for As (sourced by the Lolotoi-Multis Metamorphic Complex and basalts of the Barique Formation), Mn (sourced by the Maubisse and Barique formations), and V (sourced by the Manamas Formation). The highest values of hazard index (HI), however, were determined with Cr, in particular for children (HI higher than 10 in 12 sediments sourced by ultramafic units and their covering sedimentary units). This investigation shows that high geogenic concentrations of several elements, particularly those derived from the oceanic crust and the upper mantle, raise significant cancer and non-carcinogenic risks. [ABSTRACT FROM AUTHOR]

Abstract Road construction involves activities that emit pollutants, including particulate matter, which harms humans. This study determined and compared particulate matter (PM1.0, PM2.5 and PM10) levels and air quality index (AQI) at unpaved roads, asphalt overlay, chip-sealed and asphalt-producing sites in Ghana and the health risks posed by their exposure. It was conducted in the Ashanti and Ahafo Regions, Ghana and was cross-sectional using the low-cost sensor, PCE-RCM16. Data collection took place, January-May, 2020. The asphalt-producing, asphalt overlay, chip-sealed and unpaved road sites had mean PM10 concentrations of 12.7-fold, 7.4-fold, 6.1-fold and 2.6-fold respectively of the 2021 World Health Organisation (WHO) air quality guideline (AQG) daily limit, 45 μg m−3. The mean PM2.5 concentrations were 30.4-fold, 17.2-fold, 14.1-fold and 6.1-fold greater than the daily AQG limit, 15 μg m−3 respectively. The mean PM1.0 values were of grave concern. Using the AQI, the asphalt-producing and asphalt overlay sites were considered “hazardous”, chip-sealed site was “very unhealthy” and the unpaved sites were “unhealthy for sensitive groups”. Type of activity influenced pollution levels (p

Abstract This study aimed to assess the human health risks associated with groundwater consumption in Abakaliki Metropolis using Water Quality Index (WQI) and HERisk code. Groundwater samples (n = 32) obtained from boreholes were analysed for pH, Zn, Pb. Fe, Cr and NO3 to evaluate both non-carcinogenic and carcinogenic health risks. The average concentrations of these parameters, except Pb (0.02 mg/L) and Cr (0.06 mg/L), were within permissible limits. The distribution of the average concentrations of the parameters followed the order: Zn > Cr > Fe > NO3 > Pb. The WQI ranged from 0.15 to 505.67 classifying 12.50% of the water samples as excellent sources of drinking water, 9.38% as good, 9.38% as poor, 12.50% as very poor and 56.25% unfit for drinking. The HERisk code revealed significant non-carcinogenic and carcinogenic health risks exceeding safety limits (

Abstract Heavy metal contamination and potential risks to human health related to consuming major food crops near Iringa Municipal dumpsite are presented. Soil samples, maize (Zea mays L.) and common beans (Phaseolus vulgaris L.) were collected downslope around the dumpsite during wet season. Soil samples were analyzed using Energy-Dispersive X-Ray Fluorescence (EDXRF) while crop (maize and beans) samples were analyzed using Flame Atomic Absorption Spectrophotometer (FAAS). The potential health risks associated with human exposure to heavy metals in maize and common beans was evaluated according to the method prescribed by the United States Environmental Protection Agency. The concentrations Cd (3.25–10.78 mg/kg), As (1.84–10.98 mg/kg) and Ni (71.74–55.10 mg/kg) in soil samples exceed the maximum allowable limits set by Tanzania Bureau of Standards (TBS). The average heavy metal concentration in food crops followed the trend Cd, As

Heavy metals persist in the sediment and can induce toxicological effects on living organisms. For analysing the risk of heavy metals, geochemical fractionation is beneficial. These geochemical fractions or speciations help to determine the heavy metals availability, mobility, toxicity, enrichment, and various risks. Here, we show how heavy metal contamination of sediment poses risks to both the ecosystem and human beings. We found significant Zn, Co and Cd contamination by analysing the geoaccumulation index. We also observed higher geoaccumulation index values for the pre-monsoon season than the post-monsoon one. Furthermore, pollution load index indicated gradual contamination of heavy metals in the sediments. This study's risk assessment and modified risk assessment codes showed low or no risk, but contamination factors indicated moderate to high risk. Our analysis of the effective range median mean quotient revealed some sampling stations as medium to high-priority sites. Similarly, probable effect level mean quotient designated some sampling stations as medium-low priority sites. We anticipated a moderate to significant mortality effect on the organisms from toxicity unit index values. Potential ecological risk index indicated a very high ecological risk on the Mahananda River. Furthermore, we predicted non-carcinogenic health hazards and carcinogenic health risks in the river's sediment. [ABSTRACT FROM AUTHOR]

Every day, the amount of quality fresh water decreases notably due to contamination of drinking water. As a result, people use commercially supplied jar water in the southern part of Bangladesh as well as in the Gopalganj municipal area. This study aims to investigate the physicochemical parameters, trace elements, and microbial parameters for assessing human health risks from oral ingestion of these elements. This study gathered commercially supplied jar water samples from 15 companies in the Gopalganj municipal area during the post-monsoon season. Temperature, potential of hydrogen (pH), total dissolved solids (TDS), electrical conductivity (EC), and salinity showed significant variation among the samples, and the level was within the national and international standard limits. The concentrations of iron (Fe) and arsenic (As) were measured using a UV-VIS spectrophotometer and atomic absorption spectroscopy (AAS), respectively. The microbial analysis was conducted by the membrane filtration method. The study found that the water samples had an average concentration of 0.16mg/L in terms of Fe and 0.016mg/L in terms of As, with the mean value of As exceeding the standard limits. On the other hand, the mean Fe concentration value did not exceed the standards. Probable human health risk from heavy metal in the jar water was determined by hazard quotient (HQ), hazard index (HI), and carcinogenic risk (CR) assessments. A child (HI= 3.5914) is more vulnerable to non-carcinogenic human health risks than an adult (HI= 1.6931). Furthermore, pollution in water samples was found to pose a high carcinogenic risk, with children (CR= 1.6×10-3) being more vulnerable to carcinogenic risk than adults (CR= 7.5×10-4). In the microbial analysis, 100% of the samples exceeded the total coliform and fecal coliform standard limits, and 80% of the samples exceeded the Escherichia coli standard limits. Among the samples, 7% present high risk, around 47% present medium risk, 26% show low risk, and 20% show no risk based on the E. coli standard limits. This study did not find any samples that exceeded the extremely high limit for E. coli concentration. This study found that drinking jar water samples had inadequate quality, which may increase the risk of water-borne infections such diarrhea as well as heart disease, diabetes, and cancer. As a result, the manufacturer of drinking water in jars must carry out the essential quality control procedures, and the government should regularly monitor the procedures. [ABSTRACT FROM AUTHOR]

This study investigates the potential health risks associated with consuming mussels (Mytilus galloprovincialis Lamarck, 1819) from the Romanian Black Sea coast between 2001 and 2023. The research focuses on heavy metal (copper, cadmium, lead, nickel, and chromium) bioaccumulation in mussels and the associated human health hazards. While most metals fell within safe limits, lead and cadmium exceeded the maximum admissible concentrations set by the European Commission in a small percentage of samples (10% for cadmium, 14% for lead). To assess human health risks, we calculated dietary intake estimates and hazard quotients. These calculations suggested that current metal concentrations in the mussels are unlikely to cause adverse health effects at typical consumption levels. Although current metal concentrations seem safe based on estimated intake and hazard quotients, we emphasize the need for continuous monitoring of pollutants in seafood to ensure consumer safety. Future research should consider the cumulative effects of various contaminants and how individual factors like age and health conditions might influence risk. Public health protection requires continuous monitoring, comprehensive risk assessments, and transparent communication between scientists, policymakers, and the public to establish safe consumption guidelines. [ABSTRACT FROM AUTHOR]

Heavy metal contamination and potential risks to human health related to consuming major food crops near Iringa Municipal dumpsite are presented. Soil samples, maize (Zea mays L.) and common beans (Phaseolus vulgaris L.) were collected downslope around the dumpsite during wet season. Soil samples were analyzed using Energy-Dispersive X-Ray Fluorescence (EDXRF) while crop (maize and beans) samples were analyzed using Flame Atomic Absorption Spectrophotometer (FAAS). The potential health risks associated with human exposure to heavy metals in maize and common beans was evaluated according to the method prescribed by the United States Environmental Protection Agency. The concentrations Cd (3.25–10.78 mg/kg), As (1.84–10.98 mg/kg) and Ni (71.74–55.10 mg/kg) in soil samples exceed the maximum allowable limits set by Tanzania Bureau of Standards (TBS). The average heavy metal concentration in food crops followed the trend Cd, As < Cr, Pb < Ni < Cu < Mn < Zn with Pb in maize (0.96 mg/kg) and common beans (0.81 mg/kg) above FAO/WHO regulatory standards of 0.3 mg/kg. This implied health concerns to consuming food crops grown in the vicinity of the dumpsite. Further, lifetime–incremental cancer risk (ILCR) assessment suggest that consuming maize and common beans from the study area could increase the risk of both cancer and non-cancerous diseases in both adults and children. However, the degree of ILCR in children was noticeably higher (1.0 × 10–2) than in adults (5.10. × 10–6) for Pb in common beans. Therefore sustainable waste management should be stressed and continuous monitoring of environments around dumpsites is crucial to mitigate the negative impacts on public and environments. [ABSTRACT FROM AUTHOR]

The utilization of treated wastewater (TWW) for agricultural irrigation can enhance soil properties and fertility for better crop growth. However, toxic chemicals in TWW, if exceeding permissible limits, pose environmental and health risks. This study aims to evaluate the quality of treated wastewater (TWW) and groundwater used for irrigation in alfalfa and date palm fields, focusing on specific ion toxicity, salinity, heavy metal concentrations, and other water quality parameters. Water samples were collected from four plantation sites in the Ibra and Alqabil provinces during the summer and winter seasons of 2020 and 2021. The samples were analyzed for electrical conductivity (EC), pH, total dissolved solids (TDS), carbonate, bicarbonate, and the presence of arsenic (As), cadmium (Cd), cobalt (Co), boron (B), lead (Pb), nickel (Ni), copper (Cu), iron (Fe), zinc (Zn), manganese (Mn), and chromium (Cr). The findings reveal that both TWW and groundwater in the sampled sites exhibited salinity levels detrimental to sensitive crops. Trace element concentrations generally adhered to permissible limits as defined by FAO and Oman standards, except for boron, which exceeded allowable limits by up to 40% in groundwater when compared to the control site. Notably, cobalt (Co), arsenic (As), and cadmium (Cd) were undetectable in all water samples. Additionally, groundwater samples taken in close proximity to sewage treatment plants (STPs) displayed a 37% increase in EC, TDS, and heavy metal concentrations. This suggests that groundwater, like TWW, may contain undesirable salts and heavy metals that could compromise water quality. This research underscores the importance of monitoring and assessing the quality of both treated wastewater and groundwater used for irrigation. While these water sources hold potential benefits for agriculture, they also carry the risk of negatively impacting soil and crop health due to salinity and the presence of certain contaminants. This study provides critical insights into the safe use of TWW and groundwater in agricultural practices, highlighting areas for improvement in water treatment and management strategies to ensure sustainable agricultural productivity. [ABSTRACT FROM AUTHOR]

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Marine ecosystems are increasingly contaminated by pollutants from human activities which could impact seafood quality. This study investigated the levels of six potentially toxic elements of health concern including arsenic (As), cadmium (Cd), chromium (Cr), mercury (Hg), nickel (Ni), and lead (Pb). Analyses of those elements were conducted in eleven commercially available seafood species collected from local fish rafts in Trang province, Thailand. The findings revealed variations of element of health concern content among species, with H. raphidea exhibiting significantly high levels. Human health risks were assessed for estimated daily intake and non-carcinogenic and carcinogenic risks. The results indicate potential risks associated with As consumption, especially in the case of H. raphidea. Children (3.0–5.9 years) had the greatest vulnerable risks in comparison to other age groups. The levels of elements of health concern in most seafood samples were within safe limits. However, the continuous surveillance, monitoring, and management of these contaminants in seafood are needed, particularly in vulnerable populations.

The safety of processed grains and pulses is of health concern so far as heavy metal pollution is concerned. Despite the numerous nutritional benefits sourced from the consumption of cereals and legumes, its heavy metal pollution cannot be overlooked, since it causes adverse health effects. This study sought to measure then compare Cd, Fe, Pb and Ni levels in the various blend classifications, again compare measured levels to heavy metal specifications by regulatory bodies and then determine health risks associated with contamination by these metals. Fifteen samples grouped under three classifications were wet digested using a triacid combination of HNO3, H2SO4 and HClO4, then analysed using an Atomic Absorption Spectrophotometer (AAS). In all samples, levels of heavy metals were detectable. Measured levels ranged from 1.90 to 3.96, 25.74 to 216.78, 0.16 to 0.40 and 0.07 to 0.40 all in mg kg−1 for Cd, Fe, Pb and Ni respectively. EC and China’s maximum limit for Cd was exceeded by all 15 samples. Samples exceeded EC’s maximum limit for Pb, where as 86.67% of samples exceeded that set by China. Consumption of cereal-legume blends contaminated by these heavy metals may pose potential carcinogenic and non-carcinogenic health risks in this study.

Groundwater is widely used for domestic purposes, especially as a reliable source of drinking water in rural areas of the Lao People's Democratic Republic (Lao PDR). This preliminary study aims to examine heavy metal(loid)s contamination leading to human health risks while also focusing on a method that can improve drinking water quality in floodplain areas along the Mekong River in Lao PDR. Groundwater and surface water samples were collected during the monsoon season in 2022 in Attapeu and Champasak provinces. Heavy metal(loid)s concentrations and human health risks were investigated using inductively coupled plasma mass spectrometry (ICP-MS) and the USEPA method, respectively. A nanofiltration membrane technique was introduced to optimize the quality of groundwater. Results showed that groundwater quality was significantly poor (p < 0.05), particularly in Attapeu province, with high levels of electrical conductivity, total dissolved solids, and manganese, exceeding WHO standards of 400 µS cm−1, 300 mg L−1, and 80 µg L−1, respectively. With the groundwater ingestion pathway, children were found to be more vulnerable to non-carcinogenic risk than adults (Hazard Quotient, Hazard Index >1), but adults had a higher carcinogenic risk (Incremental Lifetime Cancer Risk >1E-04). The removal of fecal bacteria and heavy metal(loid)s was achieved using the nanofiltration membrane, demonstrating its potential as a practical point-of-use technology to provide cleaner water sources and enhance the health status of Lao residents. [ABSTRACT FROM AUTHOR]

Human health risks associated with the consumption of water from groundwater sources in the vicinity of dumpsites in Orogwe, Nekede, and Ihiagwa in Owerri West were investigated for adults and children in this study. Groundwater samples were collected within 50-500 meters from solid waste dumpsites and subjected to In-situ analysis for fast-changing parameters such as temperature, pH, electrical conductivity, dissolved oxygen, and total dissolved solids using a Hanna multi-meter Probe. Heavy metals were measured using an Atomic absorption spectrophotometer while other parameters were examined using the American Public Health Association Method (APHA). Low pH levels were observed in the study area for wet and dry seasons. Conductivity levels and dissolved solids showed higher mean values in the wet season than dry season. The pollution index result was significant (=1) for Nekede and Ihiagwa in the dry season. Exposure doses were higher in children than adults while the non-carcinogenic results ranged from medium to high risk in all samples except the control point in the wet season. Nickel, iron, and lead had a high percentage contribution to the hazard risks in both seasons. Significant carcinogenic risk (>1.0E-4) for children recorded at Ihiagwa in the dry season is of great concern. In general, the groundwater quality in the vicinity of dumpsites was of poor quality (>100) and more vulnerable in the wet season than the dry season from the water quality index (WQI) result. [ABSTRACT FROM AUTHOR]

Road deposited sediments (RDS) are important sinks of potentially toxic elements (PTEs), which may have a significant impact on human health. A systematic review of published papers on the PTEs occurrence in RDS was carried out. The main goal was to assess the global RDS contamination by PTEs and human health risks linked with anthropogenic activities. A systematic search was made to collect information about the most cited PTEs in the published literature and perform a statistical analysis. Subsequently, health risks were assessed for 35 different areas worldwide. PTE concentrations showed high variability, and means were multiple times higher than the corresponding consensus-based threshold effect concentrations (5.2-, 10.3-, 5.3-, 3-, 7.3-, and 3.6-fold higher for Zn, Pb, Ni, Cr, Cu, and Cd, respectively). PTEs concentrations were ranked as Zn > Pb > Cu > Mn > Cr > Ni > Cd. Non carcinogenic risks followed the trend Pb > Cu > Zn > Cd. Lead is responsible for the highest significant non carcinogenic risk to human health. Unacceptable exposition to carcinogenic risks is present in most areas. The top carcinogenic risk areas were Singapore > Beijing > Yixing > Shanghai > Zhuzhou for adult male, Dresden > Singapore > Ulsan > Huludao for adult females, and Dresden > Singapore > Ulsan > Huludao for children. Highest chromium and nickel carcinogenic risks occurred in Singapore, Cd in Dresden, and Cu in Huludao. Highest RDS contamination was seen in industrial areas due to pollutants deposition. Highest Zn, Cu, Cd, and Pb concentrations occur in densely urbanized areas due to heavy-duty vehicular exhausts. [ABSTRACT FROM AUTHOR]

Artisanal mining is intensely carried out in developing countries, including Brazil and especially in the Amazon. This method of mineral exploration generally does not employ mitigation techniques for potential damages and can lead to various environmental problems and risks to human health. The objectives of this study were to quantify the concentrations of rare earth elements (REEs) and estimate the environmental and human health risks in cassiterite and monazite artisanal mining areas in the southeastern Amazon, as well as to understand the dynamics of this risk over time after exploitation. A total of 35 samples of wastes classified as overburden and tailings in active areas, as well as in areas deactivated for one and ten years were collected. Samples were also collected in a forest area considered as a reference site. The concentrations of REEs were quantified using alkaline fusion and ICP-MS. The results were used to calculate pollution indices and environmental and human health risks. REEs showed higher concentrations in anthropized areas. Pollution and environmental risk levels were higher in areas deactivated for one year, with considerable contamination factors for Gd and Sm and significant to extreme enrichment factors for Sc. Human health risks were low (< 1) in all studied areas. The results indicate that artisanal mining of cassiterite and monazite has the potential to promote contamination and enrichment by REEs. Highlights: REEs were first assessed in artisanal mines of monazite and cassiterite in the Brazilian Amazon. All anthropized areas showed higher concentrations of REEs. The gratest risk occurred in areas exploited a year ago. REEs pose risks to the environment and human health. [ABSTRACT FROM AUTHOR]

After confirming that formaldehyde (FA) is carcinogenic, many studies were conducted in different countries to investigate this finding. Therefore, according to the dispersion of related studies, a bibliometric review of the current literature was performed with the aim of better understanding the exposure to FA and the resulting health risk, for the first time, using the Scopus database and the two open-source software packages, Bibliometrix R package. After screening the documents in Excel, the data was analyzed based on three aspects including performance analysis, conceptual structure, and intellectual structure, and the results were presented in tables and diagrams. A total of 468 documents were analyzed over period 1977–2023, in which 1956 authors from 56 countries participated. The number of scientific publications has grown significantly from 1977 (n = 1) to 2022 (n = 19). Zhang Y., from the Yale School of Public Health (USA), was identified as the most impactful author in this field. The Science of the Total Environment journal was identified as the main source of articles related to exposure to formaldehyde by publishing 25 studies. The United States and China were the most active countries with the most international collaboration. The main topics investigated during these 46 years included "formaldehyde" and "health risk assessment", which have taken new directions in recent years with the emergence of the keyword "asthma". The present study provides a comprehensive view of the growth and evolution of studies related to formaldehyde and the resulting health risks, which can provide a better understanding of existing research gaps and new and emerging issues. [ABSTRACT FROM AUTHOR]

The hydrogeochemical evolution of groundwater in peri-urban agricultural areas is influenced by the convergence of natural processes, agricultural practices, and industrial activities. Understanding the combination of these influences is essential for assessing groundwater quality and human health risks. The study, taking the peri-urban agricultural areas in Guixi, China as a case, investigated the major components and heavy metals in groundwater and analyzed their spatial distribution patterns, sources, controlling factors, and human health risks. HCO3− and Ca2+ are the most prevalent anions and cations in groundwater, with average concentrations of 136.74 and 34.07 mg/L, respectively. Heavy metal concentrations follow the sequence: Fe > Ba > Mn > Al > As > Pb. Groundwater compositions exhibit moderate to strong spatial variability, and most of the groundwater in the area presents moderate to significant health risks, with Cl−, As, Al, and Mn being the primary risk factors. Rock weathering by carbonic acid and industrial waste gypsum dissolution emerge as primary factors driving groundwater hydrogeochemical evolution. Fe and Mn correlate with SO42−, sourced from industrial waste gypsum, while As and Al correlate with HCO3-, indicating a geological origin. Pb originates from transportation inputs, and Ba exhibits contrasting correlations with NO3− and SO42−, reflecting the dual influence of agricultural and industrial activities. These findings highlight groundwater hydrogeochemistry evolutions in peri-urban agricultural areas are intricately influenced by the combination of natural processes and a variety of human activities, rather than just the additive effect of these factors. [ABSTRACT FROM AUTHOR]

The present study explores the use of periphyton to ameliorate toxic properties of arsenic (As) to Labeo rohita and also assesses the human food safety aspects. Fish were introduced to arsenite [As(III)] contaminated water (0.3 and 3 mg/L) along with periphyton. Biochemical, physiological and immunological parameters, including gene expression, were assessed after 30 days of exposure. Periphyton incorporation significantly improved (p < 0.05) the adverse effects of As on respiration, NH3 excretion and brain AChE activity by reducing oxidative stress and As bioaccumulation. The presence of periphyton in As(III) exposed fish (3 mg/L) increased the immune response (Immunoglobulin M and Complement C3) in the serum and the regulation of the respective immune genes in the anterior kidney was found to be similar to the control. A speciation study using LC-ICP-MS confirmed the high accumulation of As by periphyton (5.0–31.9 μg/g) as arsenate [As (V)], resulting in a lower amount of As in fish muscle. The calculated human health risk indices, Target Hazard Quotient (THQ) and Target Cancer risk (TCR) indicate that fish grown in periphyton-treated water may lower the human health risks associated with As. The study signifies the importance of periphyton-based aquaculture systems in As contaminated regions for safe fish production with enhanced yield. [ABSTRACT FROM AUTHOR]

Every day, the amount of quality fresh water decreases notably due to contamination of drinking water. As a result, people use commercially supplied jar water in the southern part of Bangladesh as well as in the Gopalganj municipal area. This study aims to investigate the physicochemical parameters, trace elements, and microbial parameters for assessing human health risks from oral ingestion of these elements. This study gathered commercially supplied jar water samples from 15 companies in the Gopalganj municipal area during the post-monsoon season. Temperature, potential of hydrogen (pH), total dissolved solids (TDS), electrical conductivity (EC), and salinity showed significant variation among the samples, and the level was within the national and international standard limits. The concentrations of iron (Fe) and arsenic (As) were measured using a UV–VIS spectrophotometer and atomic absorption spectroscopy (AAS), respectively. The microbial analysis was conducted by the membrane filtration method. The study found that the water samples had an average concentration of 0.16 mg/L in terms of Fe and 0.016 mg/L in terms of As, with the mean value of As exceeding the standard limits. On the other hand, the mean Fe concentration value did not exceed the standards. Probable human health risk from heavy metal in the jar water was determined by hazard quotient (HQ), hazard index (HI), and carcinogenic risk (CR) assessments. A child (HI = 3.5914) is more vulnerable to non-carcinogenic human health risks than an adult (HI = 1.6931). Furthermore, pollution in water samples was found to pose a high carcinogenic risk, with children (CR = 1.6 × 10−3) being more vulnerable to carcinogenic risk than adults (CR = 7.5 × 10−4). In the microbial analysis, 100% of the samples exceeded the total coliform and fecal coliform standard limits, and 80% of the samples exceeded the Escherichia coli standard limits. Among the samples, 7% present high risk, around 47% present medium risk, 26% show low risk, and 20% show no risk based on the E. coli standard limits. This study did not find any samples that exceeded the extremely high limit for E. coli concentration. This study found that drinking jar water samples had inadequate quality, which may increase the risk of water-borne infections such diarrhea as well as heart disease, diabetes, and cancer. As a result, the manufacturer of drinking water in jars must carry out the essential quality control procedures, and the government should regularly monitor the procedures.

Elucidating the absorption and translocation of heavy metal(loid)s by common vegetables across different growth environments and stages is crucial for conducting accurate environmental risk assessments and for associated control. This study investigated temporal variations in the absorption and translocation capacities of pak choi (Brassica rapa L.) for As, Cd, Cr, Cu, Pb, and Zn in polluted soils during the plant growth cycle under greenhouse and open-field cultivation modes. Results showed high root metal(loid) bioconcentration factors and root-to-shoot translocation factors for Cd (0.25 and 1.44, respectively) and Zn (0.26 and 1.01), but low values for As (0.06 and 0.88) and Pb (0.06 and 0.87). The Cd concentration in the aerial edible parts peaked during the early slow growth period, whereas other heavy metal(loid)s peaked during the later stable maturity period. Root bioconcentration and root-to-shoot translocation factors did not significantly differ between cultivation modes. However, greenhouse cultivation exhibited lower average Cd and Zn concentrations in the edible parts and cumulative uptake amounts of most metal(loid)s than open-field cultivation during the typical harvest period spanning days 60 and 90. Short-term transitioning from open-field to greenhouse cultivation may reduce health risks associated with heavy metal(loid) intake via pak choi consumption. These findings facilitate sustainable agricultural practices and food safety management.

Abstract Elevated levels of metal(loid)s in soil may pose potential threats to the ecosystem and can be harmful for human health. The concentrations of As, Cd, Pb, Cr and Ni were determined in agricultural soil collected from 45 pistachio orchards around Feizabad city, Khorasan Razavi province, Iran using ICP-OES. Also, soil pollution indices including contamination factor (CF), pollution load index (PLI) and geo-accumulation index (Igeo) were evaluated. In addition, non-carcinogenic and carcinogenic risk indices were estimated. The mean concentrations of metal(loid)s were in the order of Ni = 466.256 > Cr = 120.848 > Pb = 12.009 > As = 5.486 > Cd = 0.394 mg/kg. Concentrations of As, Cd and Pb in the soil samples were within their respective permissible limits set by World Health Organization (WHO). But concentrations of Cr and Ni in 84.4 and 100% of the samples, respectively exceeded the WHO allowable limits. The CF, PLI and Igeo showed that soil of some of the pistachio orchards was contaminated with some metals. The possible sources of the metals in the soil are application of pesticides, chemical fertilizers, manures as well as irrigation water. Hazard quotient (HQ) ad Hazard index (HI) values from soil of all the orchards were found to be well below the respective threshold limit (1), suggesting that there is no immediate non-cancer threat arising from the contamination at all the orchards with metal(loid)s for children and adults. The highest cancer risk values (1.13E-02 for children and 1.25E-03 for adults) were estimated for Ni in the soil. Collectively, this study provides valuable information to improve the soil in the pistachio orchards to reduce metal(loid)s contamination and minimize the associated health risks to the population in the area.

Urban vegetable farming in wetlands and riverbanks are common features of Ugandan cities. However, urbanization has led to various anthropogenic activities that can lead to the pollution of water resources, enrichment of pollutants in soils and, consequently, pollutant bioaccumulation in edible tissues of plants cultivated on such soils. In this study, we report on the levels of six trace metals (TMTs) in 75 samples of leafy vegetables (Brassica oleracea L., Spinacia oleracea L., Amaranthus hybridus L., Cucurbita pepo L. and Solanum nigrum L.) and soils (n = 75) grown on the banks of River Rwizi, the second longest river in Uganda only after the Nile River. The concentrations of TMTs (Mn, Zn, Cd, Pb, Cr and Cu) in edible vegetable tissues and soils were quantified using flame atomic absorption spectrometry. The mean concentrations (in mg kg−1) of the TMTs in the soil samples were 205–373.84 (Mn), 12.72–65.04 (Zn), 0.26–0.42 (Cd), 3.36–16.80 (Pb), 5.96–25.06 (Cr) and 2.83–35.27 (Cu). In vegetable samples, the concentrations ranged from 43.25 to 110.00 (Mn), 1.08 to 1.83 (Cd), 41.06 to 71.20 (Zn), 4.31 to 6.16 (Pb), 0.65 to 0.81 (Cr) and 5.70 to 14.35 (Cu). With the exception of Mn and Cr, the rest of the TMTs were bioaccumulated in the edible vegetable tissues (bioconcentration factors = 1.03 to 10.71). Considering chronic daily intake through ingestion, dermal contact and inhalation of the TMTs in soils from the banks of River Rwizi, there are no potential non-cancer and carcinogenic health effects that could be experienced in both adults and children. Consumption of leafy vegetables could pose both non-cancer health risks (from ingestion of Zn, Pb, Cr, Mn and Cd) and cancer health risks (due to intake of Cd) in both children and adults. There is therefore a need to enforce regulations to mitigate the pollution of River Rwizi for a more sustainable economic development.

Abstract Cholera infection results from the ingestion of water or food contaminated with toxigenic Vibrio cholerae. This study evaluated the occurrence of toxigenic V. cholerae in Asata River, Enugu Metropolis, Nigeria, and estimated V. cholerae infection risks from use of the River water for drinking, domestic and recreational purposes. Vibrio was detected and quantified using membrane filtration technique and thiosulfate–citrate–bile salts–sucrose agar. Isolates were screened by PCR, using specific primers targeting the internal transcribed spacer (its) region between 16 and 23S rRNA and the cholera toxin (ctx) gene. Sequenced 16SrRNA gene amplicons of two selected isolates were used for phylogenetic analysis. Quantitative microbial risk assessment (QMRA) was conducted using the β-Poisson dose–response model. About 81% (58/72) of Asata River samples recorded Vibrio counts above 1.0 $$\times$$ × 103 cfu/100 mL. Of the fifty Vibrio isolates screened, its was detected in 54% (27/50), out of which 74% (20/27) had the ctx gene of toxigenic V. cholerae. Evolutionary relatedness of the sequenced isolates to V. cholerae was revealed. The estimated risks of cholera infection in persons exposed to untreated Asata River water were above 0.5 for all the exposure scenarios, for both the rainy and dry seasons. The risks were highest (~ 0.9) for exposure via drinking water and annual risk of infection was deduced to have a probability of 1.0. Therefore, dependence on the untreated Asata River water for drinking, recreational, domestic and irrigation purposes may present a potential public health risk of cholera outbreak. We recommend increased monitoring and surveillance of River water for Vibrio abundance and that Asata River be protected from further degradation.

Meat and meat products are vital sources of essential nutrients for human health and development. However, an excessive or inappropriate consumption can pose significant health risks. In 2015, the International Agency for Research on Cancer (IARC) classified red meat as “probably carcinogenic to humans” and processed meat as “carcinogenic to humans”, yet the role of environmental contaminants in these products was not addressed. The present review focuses on human exposure to toxic trace elements (arsenic, cadmium, mercury, and lead) through meat and meat products in Asia, covering scientific literature from 1 January 2000, to 30 August 2024. Based on the citations in PubMed and Scopus databases, Asia is the region with the highest number of reported studies, with China contributing the most data. Concentrations of toxic elements in meat vary significantly depending on animal species, specific tissues consumed, and geographic origin. Correspondingly, estimated daily intakes of toxic elements from meat consumption also differ across studies. While some research highlights negligible carcinogenic and non-carcinogenic risks, others indicate potential health concerns due to elevated toxic element exposure in specific cases. However, similar to observations with organic pollutants, meat and meat products in Asia are not among the primary dietary sources of exposure to toxic elements for humans.

Heavy metals, pervasive in the environment due to natural processes and human activities, pose substantial threats to ecosystems and human health. This study aims to delve into the sources, contamination pathways in natural waters, and subsequent bioaccumulation of heavy metals across various organisms. The overview encompasses an exploration of the environmental persistence, bioaccumulation dynamics, and ecotoxicological impacts of these metals. Methodologically, this research undertakes a comprehensive review synthesizing existing literature and studies on heavy metal contamination, bioaccumulation mechanisms, and ecotoxicity. Key findings highlight the protracted environmental persistence of heavy metals, perpetuating significant threats to ecological balance and human well-being. Notably, the transfer of these metals through food chains culminates in their bioaccumulation in diverse organisms, raising concerns about potential toxicity, including human exposure. The discussion underscores the imperative nature of assessing heavy metal pollution and its ramifications on ecosystems and human health. Emphasizing the essential role of bioindicators and biomarkers, this article elucidates their significance in evaluating heavy metal-induced environmental stressors and their impact on both biota and human populations. This comprehensive study contributes to a nuanced understanding of heavy metal dynamics, advocating for proactive measures in monitoring and mitigating their deleterious effects on ecosystems and human health. [ABSTRACT FROM AUTHOR]

Urban vegetable farming in wetlands and riverbanks are common features of Ugandan cities. However, urbanization has led to various anthropogenic activities that can lead to the pollution of water resources, enrichment of pollutants in soils and, consequently, pollutant bioaccumulation in edible tissues of plants cultivated on such soils. In this study, we report on the levels of six trace metals (TMTs) in 75 samples of leafy vegetables (Brassica oleracea L., Spinacia oleracea L., Amaranthus hybridus L., Cucurbita pepo L. and Solanum nigrum L.) and soils (n = 75) grown on the banks of River Rwizi, the second longest river in Uganda only after the Nile River. The concentrations of TMTs (Mn, Zn, Cd, Pb, Cr and Cu) in edible vegetable tissues and soils were quantified using flame atomic absorption spectrometry. The mean concentrations (in mg kg−1) of the TMTs in the soil samples were 205–373.84 (Mn), 12.72–65.04 (Zn), 0.26–0.42 (Cd), 3.36–16.80 (Pb), 5.96–25.06 (Cr) and 2.83–35.27 (Cu). In vegetable samples, the concentrations ranged from 43.25 to 110.00 (Mn), 1.08 to 1.83 (Cd), 41.06 to 71.20 (Zn), 4.31 to 6.16 (Pb), 0.65 to 0.81 (Cr) and 5.70 to 14.35 (Cu). With the exception of Mn and Cr, the rest of the TMTs were bioaccumulated in the edible vegetable tissues (bioconcentration factors = 1.03 to 10.71). Considering chronic daily intake through ingestion, dermal contact and inhalation of the TMTs in soils from the banks of River Rwizi, there are no potential non-cancer and carcinogenic health effects that could be experienced in both adults and children. Consumption of leafy vegetables could pose both non-cancer health risks (from ingestion of Zn, Pb, Cr, Mn and Cd) and cancer health risks (due to intake of Cd) in both children and adults. There is therefore a need to enforce regulations to mitigate the pollution of River Rwizi for a more sustainable economic development. [ABSTRACT FROM AUTHOR]

Mercury contamination in the Amazon arising from both natural sources and intensive mining activities in the region is a significant public health concern. This metal is used to separate Au from sediments. Accordingly, this study aimed to assess the impact of mining on mercury contamination in the animal and human populations of the Amazon. This overall objective was pursued through a systematic review of the existing literature to assess the impact of Hg and identify gaps in geographic coverage arising from this assessment. Herein, we employed PECO and PRISMA-ScR protocols to select articles published between 2017 and 2023 based on projected points on a map within the biogeographic boundaries of the Amazon. We found that mercury concentrations increase with trophic levels, reaching high values of 3.7 µg/g in the muscles of predatory fish and 34.9 µg/g in human hair. The mean level of mercury in human hair in the whole (Amazon) region exceeds 6 µg/g, surpassing tolerance levels. Although mining regions show high concentrations of Hg, the highest incidence was observed among populations with fish-based diets. It was concluded that continuous research and monitoring of fish in the region are required in order to accurately assess the risk associated with Hg contamination, especially since fish are the main source of protein in this region. [ABSTRACT FROM AUTHOR]

Waste oil-based drill cuttings contain dioxins and volatile organic compounds (VOCs), which have the potential to cause serious health effects in humans. Therefore, this paper took oil-based drill cuttings (OBDCs) as the research object and carried out the testing of VOCs and dioxins content by using GC–MS and HRGCS-HRMS and comprehensively evaluated the content, composition and distribution pattern of VOCs and dioxins and the risk to human health posed by the two pollutants in OBDCs. The results showed that the VOCs did not exceed the emission limits in ESPPI (GB 31571–2015), but it is vital to recognise that 1,2-dichloropropane has the potential to cause cancer risk, with soil and groundwater risk control values of 662.95 mg·kg−1 and 0.066 mg·kg−1, respectively. Benzene, 1,2-dichloropropane and 8 other VOCs pose a non-carcinogenic risk to humans. The levels of polychlorinated dibenzofurans (PCDFs) exceeded those of polychlorinated dibenzo-p-dioxins (PCDDs), which accounted for 95.76 percent of the total PCDD/Fs, 2,3,4,7,8-P5CDF (56.00%), 2,3,7,8-T4CDF (9.20%), 1,2,3,6,7,8-H6CDF (8.80%) and 1,2,3,7,8-P5CDF (8.00%) were the main contributing monomers. The findings of the assessment on exposure risk indicate that there is a respiratory risk to oil-based drill cuttings dioxins for adults and children exceeded the World Health Organisation (WHO) acceptable daily intake (ADI) (1–4 pgTEQ/kg/d). Finally, three aspects of solid waste pre-treatment prior to incineration, the incineration process and post incineration were used to reduce the environmental and human health risks from dioxins. [ABSTRACT FROM AUTHOR]

In order to explore the distribution characteristics and human health risks of heavy metals in water bodies of lake-reservoir type drinking water sources, the drinking water from a reservoir in a prefecture-level city in central Yunnan Province was selected as the researchregion. Based on the data of water quality routine monitoring from the local ecological environment monitoring department in the past three years, the concentration levels and distribution characteristics of eight heavy metals (Zn, Pb, Fe, Cd, Mn, Cr6+, As and Hg) in the reservoir area and inlet river were analyzed. The health risk assessment model recommended by the United States Environmental Protection Agency (US EPA) was used for human health risk assessment. The results show that Hg, Cr6+, Pb and Cd are not detected in the reservoir area and the inflow river in the study area from 2019 to 2021. Zn, As, Fe and Mn are detected to varying degrees, and the high concentrations are concentrated in the inflow rivers. The high concentration of heavy metals in the inflow river appeared in the wet season, while the reservoir area appeared in the dry season. Among them, the maximum concentration of iron and manganese is exceeded the limit of drinking water and water environmental quality standards of China. Health risk assessment of metals in the study region shows that non-carcinogenic metals Pb, Hg, Zn, Fe and Mn have no risk to adults are children through drinking water. The maximum carcinogenic risk values of carcinogenic metals As, Cd and Cr6+ to adults are almost equal to the recommended limit value of the International Commission on Radiological Protection (ICRP), which needs to be given high priority. However, the maximum health risk level for children has exceeded the recommended limit of ICRP, and there is a risk of cancer. For researched metals, Cr6+ and As are the determinants of cancer risk in children and should be given priority control in children’s drinking water. [ABSTRACT FROM AUTHOR]

Rapid urbanization a major factor affecting heavy metal contamination on suburban agricultural soils. In order to assess the dynamic contamination of heavy metals in soil from agricultural land bordering a rapidly urbanizing area and the transfer of human health risks from contaminants in this process, 186 and 293 soil samples from agricultural land in suburban Chengdu were collected in September 2008 and September 2017, respectively. Several indicators, such as the integrated pollution index (PI) and the potential ecological risk index (RI), were employed for analyzing the heavy metal contamination levels, and the APCS-MLR receptor model were applied for analyzing the heavy metal sources. As a result, mean concentrations for five elements did not exceed the national soil pollution risk screening values in the two periods mentioned above. Nemerow’s composite contamination index revealed an increase in soil contamination of arable land after 10 years of urbanization, with 3.75 and 1.02% of light and moderate sample plots, respectively, by 2017. The assessment for potential ecological risk indicated an increased level of eco-risk to high for most of the sample plots. Based on the APCS-MLR model, the origin and contribution to the five elements varied considerably between the two periods mentioned above. Among them, soil Pb changed from “industrial source” to “transportation source,” soil Cr changed from “natural source” to “transportation source,” and As and Hg changed from “industrial source” to “transportation source.” As and Hg were associated with agricultural activities in both periods, and Cd was derived from industrial activities in both periods. The study suggests that inhalation has become a major contributor to non-cancer health risks in urbanization, unlike intake routes in previous periods, and that the increase in cancer risk is mainly due to children’s consumption of agricultural products with As residues. The change in the main source of As to “transportation” also indicates a decrease in air quality during urbanization and the development of the transportation industry. This study provides a reference for the governments of rapidly urbanizing cities to formulate relevant highway and agricultural policies to safeguard the health of the people based on the current situation.

Microplastic pollution (MPs) emerged as a significant environmental concern due to its persistent nature. These MPs particles endure in waters, soils, and even the atmosphere, posing potential threats to the entire ecosystem. Aquatic organisms are at risk of ingesting MPs, leading to accumulation in tissues, ultimately affecting entire food chain. This study aims to provide an overview of sources of MPs, distribution, and potential environmental impacts. MPs have been documented in various substances such as bottled water, salts, seafood, and even the air. However, the full extent of the health consequences on human exposure remains uncertain. Therefore, it is imperative that we draw public attention to the presence of these pollutants in the environment. To mitigate adverse effects of MPs, reducing plastic consumption, implementing improved waste management practices, and advocating sustainable behaviors are essential for well-being of natural ecosystems and the health human populations.

Clean drinking water is one of the United Nations Sustainable Development Goals. Despite significant progress in the water purification technology, many regions still lack access to clean water. This paper provides a review of selected water contaminants and their impacts on human health. The World Health Organization (WHO) guidelines and regional standards for key contaminants were used to characterise water quality in the European Union and UK. The concept of safe drinking water was explained based on the non-observed adverse effect level, threshold concentrations for toxic chemicals, and their total daily intake. Various techniques for monitoring water contaminants and the drinking water standards from five different countries, including the UK, USA, Canada, Pakistan and India, were compared to WHO recommended guidelines. The literature on actual water quality in these regions and its potential health impacts was also discussed. Finally, the role of public water suppliers in identifying and monitoring drinking water contaminants in selected developed countries was presented as a potential guideline for developing countries. This review emphasised the need for a comprehensive understanding of water quality and its impacts on human health to ensure access to clean drinking water worldwide.

Polycyclic Aromatic Hydrocarbons (PAHs) are organic compounds known to be potentially toxic for human health. Humans are exposed mostly through ingestion, but also through inhalation and skin contact. Thus, their concentrations in foods should be as low as possible. Fish products are appreciated as functional food, with high nutritional properties and organoleptic attributes. Despite these qualities, fish products may also contain PAHs. Humans are exposed to PAHs by eating fish meat, which can be contaminated from environmental sources, from industrial food processing methods, and from some home cooking practices. The main aspects concerning PAHs contamination of fish meat are briefly discussed: analysis and occurrence in some fish products, main factors and sources of contaminations, methodology of the determination of PAHs and current legislation on PAHs. The contamination of fish meat with PAHs has an impact on food quality. Mainly, topical studies from the last 20 years were taken into account, and also some studies that were the basis of the research in PAHs. The following platforms were used in the search: Web of Science and Scopus.

This study investigates the potential health risks associated with consuming mussels (Mytilus galloprovincialis Lamarck, 1819) from the Romanian Black Sea coast between 2001 and 2023. The research focuses on heavy metal (copper, cadmium, lead, nickel, and chromium) bioaccumulation in mussels and the associated human health hazards. While most metals fell within safe limits, lead and cadmium exceeded the maximum admissible concentrations set by the European Commission in a small percentage of samples (10% for cadmium, 14% for lead). To assess human health risks, we calculated dietary intake estimates and hazard quotients. These calculations suggested that current metal concentrations in the mussels are unlikely to cause adverse health effects at typical consumption levels. Although current metal concentrations seem safe based on estimated intake and hazard quotients, we emphasize the need for continuous monitoring of pollutants in seafood to ensure consumer safety. Future research should consider the cumulative effects of various contaminants and how individual factors like age and health conditions might influence risk. Public health protection requires continuous monitoring, comprehensive risk assessments, and transparent communication between scientists, policymakers, and the public to establish safe consumption guidelines.

Poultry manure has excellent potential to reduce overdependence on inorganic fertilizers for crop production among resource-constrained farming communities. However, its use on a large scale could possess short- and long-term risks. These risks fall into three main categories, namely human and other livestock, crop health, and environmental. This review research presented the potential value of chicken manure in soil health and food security stability. The review also presented the critical risks, such as pathogen transmission, heavy metal accumulation, and nutrient runoff, that are likely to hinder the large-scale use of poultry manure. Finally, this research has intensively presented scientifically proven strategies that could be adapted and adopted to help mitigate the current risks. Active government involvement through formulating and enacting appropriate policies and laws provides the first step in risk mitigation. Other practices, such as manure treatment and the adoption of better agronomic practices, are essential and have proved to be critical for the safe use of poultry manure. Poultry manure has excellent potential to reduce overdependence on inorganic fertilizers. To do this effectively, appropriate policies and laws should be enacted to encourage the use of safe products in the poultry sector, proper manure collection, and treatment and use. Farmers should choose and apply manure within the best agronomic principles. [Fundam Appl Agric 2023; 8(3.000): 567-579]

Source apportionment and risk assessment of soil heavy metals (HMs) are essential for pollution control. However, inherent limitations in receptor models hinder accurate source apportionment, impacting outcomes of source-oriented risk assessment. A hybrid model was employed by combining two receptor models, absolute principal component score/multiple linear regression (APCS/MLR) and positive matrix factorization (PMF) models. Four primary pollution sources were identified, followed by an assessment of source-oriented environmental and human health risks in the Huangshui River Basin. Results revealed that Cr, Cd, and Ni average concentrations surpassed their background by 3.1, 2.1, and 1.9 times, respectively. Additionally, 54.29%, 13.34%, and 18.09% of Igeo values for Cr, Cd, and Ni were classified as “moderately contamination” or higher. Natural sources significantly influence Cu (90.2%) and As (71.4%). Cr (63.4%) and Ni (77.9%) mainly originated from agriculture and industry, respectively. Transportation sources emerged as the primary contributors to Pb (59.6%), Zn (48.6%), and Cd (47.2%). The environmental risk level in this study area remained acceptable. Ecological risk was mainly attributed to industrial activities (46.6%) and transportation (37.6%), with Cd being the predominant metal responsible for this risk. Although the noncarcinogenic risk was negligible for all populations, the carcinogenic risk demands attention, particularly concerning children. Industrial sources (67.0%) and Ni were identified as the main contributors to the carcinogenic risk. This study represents an attempt to develop a hybrid model, providing an effective approach to combine models for the accurate apportionment of pollution sources and the reduction of risks.

Heavy metals contamination of fruits and vegetables is a growing concern to the public and policymakers in developing countries. This study investigated the extent of heavy metal contamination in widely consumed grape, apple, orange, banana, and pomegranate from supermarkets in Dhaka, Bangladesh, using atomic absorption spectroscopy (AAS) to assess the health risks to humans. Of the total 80% of banana and 60% of pomegranate samples, the mean lead (Pb) concentrations were 0.608 and 0.164, respectively, exceeding the maximum allowable concentration (MAC = 0.1) set by FAO/WHO and EU regulations, while the remaining fruit samples were below the limit. The Single-factor pollution index (PI) of Pb in bananas (6.08) and pomegranate (1.64) was higher than the reference value (PI>1), indicating the lower quality of fruits due to the higher amount of lead contents. The calculated incremental lifetime cancer risks (ILCRs) of cadmium (Cd) and Pb in banana, apple, grape, orange, and pomegranate for both children and i adults were exceeded the threshold limit (ILCR>10−6), which suggests that the consumption of heavy metal contaminated fruits poses potential cancer risks to the human health. In contrast, target hazard quotients (THQs) and chronic hazard index (HIs) values of all heavy metals were in the range of (THQ: 2.4 × 10−6–0.76; 6.5 × 10−7–0.20) and (HI:0.03–0.49; 0.01–0.13), respectively, for children and adults, which were below the acceptable limit (THQ<1), indicating no potential non-cancer risk for both consumer groups. These findings might help the policymakers and regulatory bodies concerned to apply control measures through monitoring the quality of locally grown or imported fruits available in supermarkets for human consumption. [ABSTRACT FROM AUTHOR]

The research paper extensively covers the phenomenon of bioaccumulation, focusing on its impact in freshwater ecosystems, particularly on fish. It details how heavy metals like mercury, lead, cadmium, and arsenic, originating from industrial pollution, agricultural runoff, and atmospheric deposition, accumulate in fish tissues over time. The abstract highlights the adverse effects of such bioaccumulation on fish health, including reproduction issues, growth abnormalities, and organ damage. It also underscores the consequent risks to human health when these contaminated fish are consumed. The study emphasizes the importance of addressing heavy metal pollution in aquatic ecosystems through effective waste management, reduction of industrial discharges, sustainable agricultural practices, and regular monitoring of fish populations. This approach is crucial to manage and mitigate the risks of heavy metal bioaccumulation in freshwater fish, thereby protecting both aquatic life and human health. [ABSTRACT FROM AUTHOR]

Polycyclic Aromatic Hydrocarbons (PAHs) are organic compounds known to be potentially toxic for human health. Humans are exposed mostly through ingestion, but also through inhalation and skin contact. Thus, their concentrations in foods should be as low as possible. Fish products are appreciated as functional food, with high nutritional properties and organoleptic attributes. Despite these qualities, fish products may also contain PAHs. Humans are exposed to PAHs by eating fish meat, which can be contaminated from environmental sources, from industrial food processing methods, and from some home cooking practices. The main aspects concerning PAHs contamination of fish meat are briefly discussed: analysis and occurrence in some fish products, main factors and sources of contaminations, methodology of the determination of PAHs and current legislation on PAHs. The contamination of fish meat with PAHs has an impact on food quality. Mainly, topical studies from the last 20 years were taken into account, and also some studies that were the basis of the research in PAHs. The following platforms were used in the search: Web of Science and Scopus. [ABSTRACT FROM AUTHOR]

A total of 30 topsoil, subsoil samples, and 11 new and used cupels were collected around a Pb fusion fire-assay laboratory in Ouagadougou, Burkina Faso, and their physico-chemical parameters and major and potentially toxic (PTE) element concentrations were determined. The results showed that the soil samples in the immediate vicinity of the used-cupel disposal site were highly polluted with Pb (up to 8900 mg/kg). Cluster analysis identified the used-cupels as the primary source of Pb, As, Cr, Cu, Ni, and Ca contamination of topsoils. Furthermore, principal component analysis revealed that abundance and mobility of Cr, Cu, Ni, and Pb were likely controlled by clay and Fe- and Al-oxyhydroxides, whereas that of As and Mn appeared to be a function of pH and oxido-reduction reactions. With pollution loading indices higher than unity, the status of all the sampling sites ranged from very high to moderate polluted. Similarly, the used-cupel disposal site had a very high average ecological risk index compared to the two relatively distant sites. Lead, As, and Cr proved to have non-carcinogenic effects on children in all sites, whereas these elements only showed non-carcinogenic effects on adults in the used-cupel disposal site. Direct ingestion was the major pathway of PTE exposure. The carcinogenic risk index for all sites and all elements exceeded the threshold. Moreover, the average total carcinogenic risk indices for Cr, Ni, As, and Pb in all sites were high enough to pose lifetime cancer risks to the exposed population with the used-cupel disposal site having the highest average value. Urgent remediation is necessary to prevent the spread of pollution to larger areas. [ABSTRACT FROM AUTHOR]