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espanolContextualizacion: gracias al avance de tecnicas analiticas sensibles desarrolladas en las ultimas decadas, se ha podido identificar y cuantificar la presencia de diversos contaminantes en el medio acuatico, dentro de este grupo se encuentran los contaminantes emergentes (CE) conformados por productos de cuidado e higiene personal, antibioticos, hormonas, plastificantes, farmacos y otros que son vertidos a las fuentes de agua alterando el equilibrio de estos ecosistemas. Vacio de investigacion: diversas investigaciones muestran que los contaminantes emergentes pueden comprometer la vida acuatica y la salud humana. A la fecha en la ciudad de monteria y en el departamento de Cordoba no se encuentran reportados ningun estudio que permita evidenciar la presencia de contaminantes emergentes en agua superficial, de consumo humano y residual. Proposito del estudio: el presente estudio, tuvo como objetivo evaluar la presencia de cinco contaminantes emergentes comunes: naproxeno, ibuprofeno, gemfibrozilo, cafeina y triclosan en muestras de agua de consumo humano, residual y superficial colectadas al norte del pais, representando asi uno de los primeros estudios en reportar la presencia de estos compuestos en fuentes hidricas en esta region. Metodologia: se empleo extraccion en fase solida (SPE) para el analisis de las muestras de agua, la deteccion y cuantificacion se realizo por cromatografia liquida de alta eficacia con detector de arreglo de diodo y fluorescencia molecular (HPLC-DAD-FLD). Resultados y conclusiones: el ibuprofeno fue el compuesto que se encontro con mayor frecuencia en las muestras de agua, caso contrario al triclosan, que fue el menos detectado (2.25 µg/L); se hallo cafeina en un maximo de 43.38 µg/L mientras que las concentraciones de naproxeno e ibuprofeno estuvieron entre 0.047 y 10.21 µg/L, resaltando la presencia de ibuprofeno y gemfibrozilo en agua de consumo humano. Estos resultados manifiestan la presion antropogenica ejercida sobre los compartimientos acuaticos, convirtiendose en un problema ambiental que compromete la dinamica y servicios ecosistemicos. Se encontro que las plantas de abastecimiento de agua no tienen en cuenta la presencia de estos compuestos en sus sistemas de potabilizacion, lo cual podria constituirse un problema de salud publica en un futuro. EnglishContextualization: Advancement in the Sensitivity of Analytical Techniques developed in recent decades contribute to identify and quantify the presence of various pollutants in the aquatic environment, within this group of pollutants we have the emerging pollutants (EP) which are mainly organic compounds present as personal care and hygiene products, antibiotics, hormones, plasticizers, drugs and other products that are dumped into water sources altering the balance of these ecosystems. Knowledge gap: Several studies show that emerging pollutants may negatively affect aquatic life and human health. To date, in the city of Monteria and in the department of Cordoba, any investigations has been reported that allows evidence of the presence of emerging pollutants in surface water, for human and residual consumption. Purpose: This study aimed to evaluate the presence of five common emerging pollutants: naproxen, ibuprofen, gemfibrozil, caffeine and triclosan in samples of water for human, residual and surface consumption collected in the north of Colombia, representing thus one of the first studies to report the presence of these compounds in water sources in this region. Methodology: Solid phase extraction (SPE) was used for the analysis of the water samples; the detection and quantification were carried out by high efficiency liquid chromatography with a diode array detector and molecular fluorescence (HPLC-DAD-FLD). Results and conclusions: Ibuprofen was the most frequently found compound in the water samples, opposite to triclosan, which was the least detected (2.25 µg / L), caffeine was found with a maximum of 43.38 µg/L, while concentrations of naproxen and ibuprofen were between 0.047 and 10.21 µg/L, which is an important health concern due to presence of these compounds in drinking waters. These results show the anthropogenic pressure exerted on the aquatic compartments, which could become an environmental problem that may affect the dynamics and ecosystem services. It was found that the water supply plants do not take into account the presence of these compounds in their purification systems, which could become a public health issue in the future. Ibuprofen was found most frequently in all three the water sources, in contrast to triclosan, which was the least frequently detected at low levels (2.25 µg / L), caffeine was found with a maximum of 43.38 µg/L, while naproxen and ibuprofen concentrations were between 0.047 and 10.21 µg/L. These results show the anthropogenic pressure exerted on the aquatic compartments, which could become an environmental problem in the future. At the same time, it shows that the water supply plants do not take into account the presence of these compounds in their purification systems; Although the concentrations reported are low, it does not indicate that they do not represent any type of risk

Soils contaminated by potentially toxic elements (PTEs) as a result of anthropogenic activities such as mining are a problem due to the adverse effects on human and environmental health, making it necessary to seek sustainable strategies to remediate contaminated areas. The objective of this study was to evaluate the species

The Hg accumulation in different commercial varieties of Oryza sativa L. was evaluated in the region of La Mojana, Colombia, where rice cultivation has become the staple food of the population living in this area. The varieties studied were Fedearroz-473 (FA473), Fedearroz-2000 (FA2000), and Fedearroz-Mocari (FAM). Soil spiked at different Hg levels was evaluated, (130, 800, and 1500 µg kg−1) using a 32 factorial design that consisted of 3 (rice varieties) × 3 (Hg contents). The biomass, 1000-grain weight, and the accumulation of Hg in the roots, grains, and husks were determined. The highest biomass was found in the FA473 (308.76 ± 108.26 g), and the lowest was found in FAM (144.04 ± 26.45 g) in the 1500 µg kg−1 Hg soil in both cases. The weight per 1000-grains decreased significantly in the soil containing 800 µg of Hg kg−1. Hg accumulation in the organs of the evaluated varieties was higher in the roots, followed by in the husks and grains. The Hg in the rice grains of the evaluated varieties presented levels close to the permissible limit of the Chinese standard (20 μg Hg kg−1) in the evaluated soils and were only exceeded by FA473. Although in natural soil concentrations, the non-cancer health risk (HQ) from rice consumption was lower for FA473 and FAM, Hg enrichment in the soil of La Mojana region may endanger the health of future populations due to their high consumption of rice.

The objective of this work is the validation and implementation of an analytical method for the determination of arsenic chemical species in rice grain samples using High-performance liquid chromatography coupled to a hydride generator with atomic fluorescence detector (HPLC-HG-AFS). The extraction protocol developed was based on HNO3 0.28 M (90 °C, 2 h), microwave-assisted. The results showed recovery percentages of arsenite (As (III)) (99–101%), arsenate (As (V)) (91–96%), dimethylarsinic acid (DMA) (92–102%) and monomethylarsonic acid (MMA) (94–97%). The precision of the method presented coefficients of variation lower than 7% and 8% for repeatability and reproducibility respectively. The detection limits were 2.5, 3.75, 7.5 and 4.0 µg kg−1 for As (III), As (V), DMA and MMA respectively. The proposed methodology is reliable for the quantification of As species, because they are conserved during the extraction.•The extraction protocol developed was based on Microwave-assisted acid extraction.•This methodology offers good sensitivity, precision, accuracy, detection and quantification limits.•It was successfully applied to determination of arsenic chemical species in rice grains., Graphical abstract Image, graphical abstract

Phytoremediation has received increased attention over the recent decades, as an emerging and eco-friendly approach that utilizes the natural properties of plants to remediate contaminated water, soils or sediments. The current study provides information about a pilot–scale experiment designed to evaluate the potential of the anchored aquatic plant Limnocharis flava for phytoremediation of water contaminated with mercury (Hg), in a constructed wetland (CW) with horizontal subsurface flow (HSSF). Mine effluent used in this experiment was collected from a gold mining area located at the Alacran mine in Colombia (Hg: 0.11 ± 0.03 μg mL−1) and spiked with HgNO3 (1.50 ± 0.09 μg mL−1). Over a 30 day test period, the efficiency of the reduction in the heavy metal concentration in the wetlands, and the relative metal sorption by the L. flava, varied according to the exposure time. The continued rate of removal of Hg from the constructed wetland was 9 times higher than the control, demonstrating a better performance and nearly 90% reduction in Hg concentrations in the contaminated water in the presence of L. flava. The results in this present study show the great potential of the aquatic macrophyte L. flava for phytoremediation of Hg from gold mining effluents in constructed wetlands.

The artificial or constructed wetlands have been widely used since their first large-scale application in the late 1960s. Taking into account the low costs, the easy operation and maintenance, and their environment friendly methods, the constructed wetlands could be considered as a green treatment technology; when simulating the natural wetland processes the systems have a great versatility to treat various types of wastewater. The physicochemical properties such as solubility and partition coefficients soil/water and octanol/water become relevant at the time of studying removals. The National Water Study in Colombia established that the livestock sector alone uses 8.5% of the total water used in this country. Manure waste from livestock activities can be incorporated into the crop soil as composting or through a liquid preparation that is sprayed on crop fields. The livestock farm was located in the rural area of Cordoba Department, near the facilities of the University of Cordoba, where pilot systems of artificial or constructed wetland were installed.

The concentrations of polycyclic aromatic hydrocarbons and heavy metals were evaluated in shallow sediments, water, fish and seabird samples from the Cispata Bay, Colombia. The heavy metals concentrations in the sediment was in the following order: Cu>Pb>Hg>Cd. The heavy metal concentration was different (p

The use of metal-accumulating plants for the phytoremediation of contaminated soils is gaining more attention. Mercury (Hg)-contaminated soils from historical gold mines represent a potential risk to human health and the environment. Therefore, Jatropha curcas plant, that has shown its tolerance to these environments, is a species of particular interest to implement phytoremediation techniques in gold mining sites. In this work, the behavior of J. curcas was assessed in different hydroponic cultures fortified with Hg at concentrations of 5, 10, 20, 40, and 80μgHg/mL (T5, T10, T20, T40 and T80, respectively). After exposure, plant growth, net photosynthesis, leaf area, and Hg accumulation were determined and variables such as net Hg uptake, effective Hg accumulation, translocation and bioaccumulation factors were calculated. Accumulation of Hg in root and leaf tissues increased with respect to the Hg concentrations in the hydroponic culture, with statistically significant differences (p0.05) among treatments. Moreover, Hg concentration in roots was 7 and 12-fold higher in average than in plant leaves and shoots, respectively. Many effects were found in the development of plants, especially related with loss of biomass and leaf area, with significant growth inhibition related to control values (50% with treatment T5). Moreover, percentage of inhibition was even higher (60%) with same treatment for net photosynthesis. Finally, it should be highlighted that for T40 and T80 treatments, plant growth and photosynthesis were almost completely depleted (88%-95%).