Spatial distribution and risk assessment of heavy metals in soil near a Pb/Zn smelter in Feng County, China.
TL;DR: The results showed the topsoil in the proximity ofsmelter, especially the smelter area and county seat, were highly polluted by HMs in contrast to the river basins, and the dominated soil pollutant (Cd) had higher ecological risk than Cu, Ni, Zn and Pb.
About: This article is published in Ecotoxicology and Environmental Safety.The article was published on 2017-05-01. It has received 204 citations till now. The article focuses on the topics: Soil contamination & Topsoil.
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TL;DR: The results showed that the growth of alfalfa was significantly inhibited, and an impact that was most pronounced in seedling biomass and chlorophyll content, while malondialdehyde content continually increased in metal-contaminated soil.
164 citations
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TL;DR: Based on the comparison of metal concentrations in soil-selected sites of the world and used indices of pollution or contamination in soils, the concentration of heavy metal in contaminated soils varied widely, and pollution indices confirmed the significant contribution of soil pollution from anthropogenic activities mainly in urban and industrial areas.
Abstract: This article provides the assessment of heavy metal soil pollution with using the calculation of various pollution indices and contains also summarization of the sources of heavy metal soil pollution. Twenty described indices of the assessment of soil pollution consist of two groups: single indices and total complex indices of pollution or contamination with relevant classes of pollution. This minireview provides also the classification of pollution indices in terms of the complex assessment of soil quality. In addition, based on the comparison of metal concentrations in soil-selected sites of the world and used indices of pollution or contamination in soils, the concentration of heavy metal in contaminated soils varied widely, and pollution indices confirmed the significant contribution of soil pollution from anthropogenic activities mainly in urban and industrial areas.
164 citations
Cites background from "Spatial distribution and risk asses..."
...…and listed in Table 4 (Chen et al. 2005, 2015; McLaren et al. 2005; Biasioli et al. 2006, 2007; Lee et al. 2006; Morton-Bermea et al. 2009; Ajmone-Marsan and Biasioli 2010; Simasuwannarong et al. 2012; Kuusisto-Hjort and Hjort 2013; Li et al. 2014; Resongles et al. 2014; Shen et al. 2017)....
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TL;DR: Metal distribution revealed that pollution in the studied area is non-homogeneous, and agricultural activities (As, Cu, and Cd), transportation emission, coal combustion, and smelting activities (Zn, Pb, and Cu) were ascertained as the potential sources based on the Positive matrix factorization (PMF) analysis results.
154 citations
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TL;DR: The results showed the combined applications of PMF, GIS, and PCA were accurate, pragmatic, and effective for source apportionment.
136 citations
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TL;DR: According to an extensive review of the scientific literature (2010-2020), this article investigated the current pollution situation of heavy metals in soils near Chinese nonferrous metal smelters and their main source approaches and health risk implications for soil remediation were discussed in detail.
129 citations
References
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TL;DR: In this article, a sedimentological risk index for toxic substances in limnic systems should at least, account for the following four requirements: the following: the quality of the sediment, the water quality, the sediment quality, and the sediment diversity.
6,177 citations
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TL;DR: A comprehensive assessment of soil heavy metal pollution derived from mines in China is provided, while identifying policy recommendations for pollution mitigation and environmental management of these mines.
2,061 citations
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TL;DR: Comparisons with other regions of the world show that the current status of soil contamination, based on the total contaminant concentrations, is not worse in China, however, the concentrations of some heavy metals in Chinese soils appear to be increasing at much greater rates.
Abstract: China faces great challenges in protecting its soil from contamination caused by rapid industrialization and urbanization over the last three decades. Recent nationwide surveys show that 16% of the soil samples, 19% for the agricultural soils, are contaminated based on China’s soil environmental quality limits, mainly with heavy metals and metalloids. Comparisons with other regions of the world show that the current status of soil contamination, based on the total contaminant concentrations, is not worse in China. However, the concentrations of some heavy metals in Chinese soils appear to be increasing at much greater rates. Exceedance of the contaminant limits in food crops is widespread in some areas, especially southern China, due to elevated inputs of contaminants, acidic nature of the soil and crop species or cultivars prone to heavy metal accumulation. Minimizing the transfer of contaminants from soil to the food chain is a top priority. A number of options are proposed, including identification of the sources of contaminants to agricultural systems, minimization of contaminant inputs, reduction of heavy metal phytoavailability in soil with liming or other immobilizing materials, selection and breeding of low accumulating crop cultivars, adoption of appropriate water and fertilizer management, bioremediation, and change of land use to grow nonfood crops. Implementation of these strategies requires not only technological advances, but also social-economic evaluation and effective enforcement of environmental protection law.
1,357 citations
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TL;DR: The spatial distribution maps of heavy metals revealed that steel industrial district was the contamination hotspots, indicating significant contamination introduced by steel industry on soils.
595 citations
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TL;DR: The results showed that microbial biomass C was negatively affected by the elevated metal levels and was closely correlated with heavy metal stress, and Polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) analysis demonstrated that heavy metals pollution had a significant impact on bacterial and actinomycetic community structure.
523 citations