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Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Transactions of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Industrial Water Treatment is the property of CNOOC Tianjin Chemical Research & Design Institute and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Technology of Water Treatment is the property of Technology of Water Treatment Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This paper refers to a survey conducted in Zhengzhou section of the Yellow River for the purpose of investigating heavy metal pollution characteristics and of exploring the pollution sources. Monitoring was thereby carried on August 29-31, 2022 along the riparian zone collecting samples of the river sediments and analyzing the concentrations of nine kinds of heavy metal, including Cd, Pb, Cu, Zn, As, Hg, Cr, Ni and Mn. Then the Tessier five-step sequential extraction method was used for the morphological analysis of the heavy metals; the ground accumulation index (Igeo) was used to evaluate heavy-metal pollution degree, with Nemero pollution index being applied to the comprehensive assessment of the pollution situation; and the principal component analysis (PCA) and absolute factor analysis-multiple linear regression analysis model (APCS-MLR) were used to analyze the source of the pollutants. Consequently, the survey showed that both of the mean concentrations of Pb and Cd in the sediments of the riverine zone of Zhengzhou section of the Yellow River exceeded the soil background value of heavy-metal in Henan Province. Results of the speciation analysis showed that the environmental activities of Mn, Cd, Pb and Hg were relatively high; the evaluation of geo-accumulation index (Igeo) indicated that Cd had resulted in slight to moderate pollution in the sediments of the River; and the evaluation results of the Nemero pollution index showed that all the above-mentioned heavy-metal elements were on the safety level. Result of the source apportionment suggested that tannery industry, agricultural activities and automobile parts production, as well as the natural source were the major heavy-metal pollution sources in the riparian zone of Zhengzhou section of the Yellow River. [ABSTRACT FROM AUTHOR]

The pollution of heavy metals and organic matter in soil not only causes huge economic losses, but also seriously threatens human health. Biochar is widely used in agriculture, ecological restoration and environmental protection because of its wide range of raw materials, simple preparation method, large specific surface area, rich surface functional groups and developed pore structure. In this paper, the source and preparation technology of biochar, the adsorption mechanism of pollutants, the influencing factors and the application status of biochar in soil heavy metal and organic pollution remediation were reviewed.at the same time, the research focus of biochar materials in contaminated soil re- mediation was prospected, in order to provide reference for the application of biochar in soil pollution remediation. Biochar is widely used in agriculture, ecological restoration and environmental protection because of its wide range of raw materials, simple preparation method, large specific surface area, rich surface functional groups and developed pore structure. In this paper, the source and preparation of biochar, the adsorption mechanism of pollutants, the influencing factors and the application status of biochar in soil heavy metal and organic pollution remediation were reviewed. Finally, the research focus of biochar materials in contaminated soil remediation was prospected, in order to provide reference for the application of biochar in soil pollution remediation. [ABSTRACT FROM AUTHOR]

Copyright of Science & Technology of Cereals, Oils & Foods is the property of Science & Technology of Cereals, Oils & Foods Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Applied Chemistry is the property of Chinese Journal of Applied Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Ecological Science is the property of Ecological Science Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The objective of this paper is to elucidate the environmental capacity of heavy metal in soils of an urbanization gradient zone of Urumqi City, a total of 88 surface soil samples were thereby collected from the typical gradient zone including urban, suburban, rural and wasteland areas, and heavy metal contents of Cd, Hg, As, Pb, Cu, Ni, and Zn in soils were measured, and the characteristics and spatial distribution pattern of the environmental capacity of soils was analyzed based on the GIS and the method of comprehensive environmental index (PI). As a result, the investigation showed that heavy metal contents in topsoil of the urbanization gradient zone along the areas of urban, suburban, rural and wasteland differed in a certain degree, and Hg had been evidently enriched in soils of all the areas of the gradient zone; the mean PIs of heavy metals in soils of the urbanization gradient zone were arranged in order of decreasing magnitude: rural> suburban>wasteland> urban, the relevant environmental capacity of all the areas being mediocre. As to the spatial pattern, individual environmental capacity index of each single heavy metal in soils of those areas was different, and low PI mainly distributed in the urban area, which indicated a significant impact of urbanization on soil environmental capacity. The dynamic annual capacity and static annual capacity of each heavy metal were in order of decreasing magnitude: Zn> Ni> Pb> Cu> As> Hg> Cd. In addition, the dynamic annual capacity of heavy metals in soils of each arear of the gradient zone showed a trend 20 a > 40 a > 60 a > 80 a > 100 a. The aver-age dynamic annual capacity of every kind of heavy metal in soil of each gradient zone area was greater than the static annual capacity in fixed number of years, and as a whole, the environmental capacity of soils tended better. [ABSTRACT FROM AUTHOR]

Copyright of Food Research & Development is the property of Food Research & Development Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In China, the main pathway for the consumption of municipal solid waste (MSW) incineration fly ash has long been through stabilization pretreatment followed by landfill disposal in MSW landfill sites. The potential environmental risk of heavy metals contained in stabilized fly ash, which has a long span of landfill years and a huge stock, under the influence of complex landfill environments, is a prominent challenge to be faced by landfill management in the future. Based on the background of "non-standard co? landfill of fly ash and raw MSW", this paper focused on the effects of external environmental factors such as pH, DOM, ORP, stability, CO2 atmosphere and stabilizing agents, particle size on the leaching of heavy metals in landfill fly ash. The impact patterns of different influencing factors and the interaction effects between each factor were discussed, a and there potential environmental risks were evaluated. It is pointed out that the interaction of leachate water quality and internal environmental factors on the long-term leaching behavior and environmental risk of heavy metals in landfill fly ash is worthy of further study. Therefore, the implementation of the "exemption clause" in the historical landfill disposal of MSW incineration fly ash in China has not changed the hazardous waste attributes of fly ash Itself. In the future it is necessary to strengthen the collaborative attention to the hazardous and resource attributes of a large amount of stabilized fly ash stored in landfill. [ABSTRACT FROM AUTHOR]

Copyright of Asian Journals of Ecotoxicology is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective Soil contamination by heavy metals is a pervasive issue, and this paper investigates the spatial distribution of Pb, As, and Cd in the groundwater-soil-rice system in the Changshou district of Chongqing. We also assess their exposure risk and predict their potential changes in the future. Method Geostatistical techniques, ArcGIS, and the target hazard quotients (THQ) methods were used to assess the risk of the three metals entering food chain. Based on these results, we predicted their potential changes and distribution up to 2036. Result Pb, As, and Cd in groundwater, soil and rice co-existed spatially, with their concentrations higher in the southwest than in the northeast. The THQ model did not showed risk of rice consumption for adults (THQ (As, Pb, and Cd) <1), but showed that there was slight risk of Cd (THQCd=1.12) and Pb (THQPb=1.05) for children. The model predicted substantial differences in the content of Pb, As, and Cd between different three management scenarios: ideal, no human intervention, and severe pollution until 2036. While the contents of the heavy metals were predicted to decrease by 4% to 8% under the ideal scenario in 2036 compared to the current level in 2021, allowing severe pollution to continuously happen is expected to increase heavy metal content by 1.51 to 1.72 times the current level.Conclusion Industries are the primary source of heavy metal pollution in Changshou district. Regarding the exposure risk to children and vulnerable people, and current pollution level, strict measures, including controlling discharge of industrial waste into soils and remediating contaminated soils are essential to reducing heavy metal contents in soil and alleviating them entering food chain. [ABSTRACT FROM AUTHOR]

Copyright of Asian Journals of Ecotoxicology is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Environmental Science & Technology (10036504) is the property of Editorial Board of Environmental Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Industrial Water Treatment is the property of CNOOC Tianjin Chemical Research & Design Institute and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Acid mine drainage (AMD) is an environmental problem commonly found in mining area. This paper collectively investigated the physicochemical parameters in AMD, and the speciation of heavy metals in the sediment and the associated risk of their re-mobilization in the Shirenzhang mine site. Results indicated that the aquatic systems suffered a combined pollution of heavy metals As, Zn, Cu, and Fe. The secondary Fe minerals in the sediments were capable of immobilizing the heavy metals and the immobilization affinity of minerals to As was stronger than that to Zn, Cu, and Cd. At pH<3, the well crystalline minerals including jarosite and ferroarsenite were detected in the sediments, and the heavy metals were mainly presented in the crystalline iron oxide-bound phase and the residual phase. The stability of heavy metals was relative high. At pH>3, however the poor crystalline iron oxyhydroxide including schwertmannite and β - Fe(OOH) were the dominant secondary minerals. And the heavy metals in the sediments were mainly presented in the surface-adsorbed phase and the poor crystalline iron oxide-bound phase, which led to a low stability of the heavy metals. In addition, the relative abundance of iron reducing bacteria was high in the sediments at pH>3, which might induce the transformation of the secondary minerals and the associated mobilization of heavy metals. These results provided important insights into the geochemical behavior of heavy metals in AMD environments. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Asian Journals of Ecotoxicology is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Shenyang Agricultural University is the property of Journal of Shenyang Agricultural University Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Environmental Science & Technology (10036504) is the property of Editorial Board of Environmental Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This paper first introduces the algal-bacteria symbiosis mainly from the relationship between bacteria and algae・ Then, the mechanism of treatment of heavy metal wastewater by algal-bacteria symbiosis was described, mainly through the adsorption of heavy metal attached to the cell wall surface, and then transported heavy metal into the cell for biological enrichment, and the formation of complex between extracellular polymer and heavy metal to remove heavy metal ・ Finally, the present situation of treatment of livestock and poultry wastewater, mine wastewater and textile wastewater by algal symbiosis is reviewed ・ The advantages and existing problems of the treatment of heavy metal wastewater by algal-bacteria symbiosis are summarized, and the development prospect is prospected. [ABSTRACT FROM AUTHOR]

Rapid detection of heavy metal elements in Chinese medicinal materials is of great significance to pollution control and people s health. Laser-induced breakdown spectroscopy (LIBS) is a rapid detection method. Compared with sample digestion, pretreatment methods such as grinding and pressing have simplified the physical properties of samples, but they can not meet the requirements of large-scale varieties and large quantities of Chinese medicinal materials. If the sample pretreatment is further simplified, the advantages of LIBS rapid detection will be more prominent. In this paper, Codonopsis pilosula slices with different Pb content were obtained by soaking with Pb solution, and Pb LIBS spectral intensity was obtained in turn. The amount of Pb was determined initially by sequencing, and the sample was randomly divided into three parts: 38 A samples were detected by ICP-MS, and calibration curves were established to obtain the concentration of Pb in samples B and C. Since the Pb content of the 10 B samples were known, they were used as reference calibration samples microdamage detection of Pb in Codonopsis pilosula samples to be tested, and the 19 C samples were used to verify the accuracy of the microdamage detection method. The linear correlation coefficient R² of the established micro-loss scaling curve is 0.776 4, which can be used for the rapid detection of Codonopsis pilosula by LIBS in sliced samples. The average relative error of Codonopsis pilosula by LIBS is 3.74%. Compared with the inductively coupled plasma mass spectrometry(ICP-MS) method, the correlation coefficient R² was 0.795 7. The feasibility of micro-damage detection by LIBS technology was verified. The prepared reference calibration samples of Codonopsis pilosula were repeated for sample calibration and instrument calibration. The experimental treatment of Codonopsis pilosula samples was only sliced, avoiding pretreatment such as grinding and tablet pressing, more fully reflecting the advantages of LIBS rapid detection, and providing a new method for the application of LIBS technology in the field of rapid detection of heavy metal elements in Chinese medicinal materials. [ABSTRACT FROM AUTHOR]

Copyright of Mining & Metallurgy (10057854) is the property of Beijing Research Institute of Mining & Metallurgy Technology Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Transactions of the Chinese Society of Agricultural Engineering is the property of Chinese Society of Agricultural Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Environmental Science & Technology (10036504) is the property of Editorial Board of Environmental Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In this paper, Kalanchoe daigremontiana was taken as the research object, the effect of lead and zinc on its growth rate and the accumulation of heavy metals in different parts were studied by potted method. The results showed that lead and zinc have toxic effects on the plant height and root system of Kalanchoe daigremontiana, resulting in the reduction of plant height and the shortening of root system. When the concentration of lead and zinc in soil increased, the content of lead and zinc in leaves and roots increased significantly. In addition, the lead and zinc elements in the rooting body were mainly accumulated in the roots; the extraction efficiency of plants treated with zinc was much higher than the extraction rate of plants contaminated with lead and Kalanchoe daigremontiana had a good enrichment capacity for lead and zinc. According to the Fourier transform infrared spectrometer and XRD characterization of soil before and after remediation by Kalanchoe daigremontiana, it was found that the tested soil before and after restoration contained Si, O and other elements, and the diffraction peaks of Zn(OH)2 compounds disappeared after Kalanchoe daigremontiana restoration. The above results had important reference significance for the application of Kalanchoe daigremontiana in lead-zinc phytoremediation. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Transactions of the Chinese Society of Agricultural Engineering is the property of Chinese Society of Agricultural Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Bulletin of the Chinese Ceramic Society is the property of Bulletin of the Chinese Ceramic Society Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Based on the test data of top soil, Chinese medicinal materials and root soil samples, the paper studies the contents, spatial distribution characteristics and pollution degrees of five heavy metal elements including As, Cd, Cu, Hg and Pb in the topsoil of Chinese medicinal materials planting area of Niujiayingzi Town in Xibo River Basin, Chifeng City, Inner Mongolia, as well as the accumulation characteristics of soil heavy metals by different Chinese medicinal materials and heavy metal pollution degree of herbs. The results show that the five elements in the topsoil of Chinese medicinal materials planting area share the same origin, mainly from the parent material, and in association, with the mean contents of 8.729x10-6, 0.142x10-6, 21.146x10-6, 0.036x10-6 and 23.651 x 10-6, respectively. The variation coefficients of Hg and Cd are 0.639 and 0.472 respectively, reaching the intensity variation, for their low soil background contents and more susceptible to various factors. Both the single and comprehensive pollution indexes of the soil heavy metals are less than 0.7, which shows a clean level of soil quality and meets the soil environmental requirements for the GAP base construction of Chinese medicinal materials. The concentration coefficients or pollution indexes of heavy metals in the medicinal parts of platycodon grandiflorum, glehnia littoralis and achyranthes bidentata are all less than 0.50, with their contents much lower than the limit value of heavy metals in Chinese medicinal materials. The Chinese medicinal materials produced in the planting area of Niujiyingzi Town all meet the requirements of green standard. [ABSTRACT FROM AUTHOR]

Copyright of Chinese Journal of Inorganic Analytical Chemistry / Zhongguo Wuji Fenxi Huaxue is the property of Beijing Research Institute of Mining & Metallurgy Technology Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This paper summarizes the current s让uation of recycling and utilization of circulating fluidized bed fly ash(CFB ash) in recent years, briefly introduces the influence of the physical and chemical properties of CFB ash on the occurrence of heavy metals, and focuses on the influence of the special properties of CFB ash on the migration of heavy metals and the factors limiting the comprehensive utilization of CFB ash. The potential problems in CFB ash storage yard are analyzed in order to provide reference for the follow-up pollution prevention research. [ABSTRACT FROM AUTHOR]

Copyright of Multipurpose Utilization of Mineral Resources / Kuangchan Zonghe Liyong is the property of Multipurpose Utilization of Mineral Resources Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Asian Journals of Ecotoxicology is the property of Gai Kan Bian Wei Hui and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agricultural Resources & Environment / Nongye Ziyuan yu Huanjing Xuebao is the property of Journal of Agricultural Resources & Environment Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Environmental Science & Technology (10036504) is the property of Editorial Board of Environmental Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)