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首页> 美国卫生研究院文献>International Journal of Environmental Research and Public Health >Distribution and Health Risk Assessment of Trace Metals in Soils in the Golden Triangle of Southern Fujian Province China
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Distribution and Health Risk Assessment of Trace Metals in Soils in the Golden Triangle of Southern Fujian Province China

机译：闽南金三角土壤中微量金属的分布及健康风险评估

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In recent years, intensified industrialization and rapid urbanization have accelerated the accumulation of trace metals in topsoils of the Golden Triangle of Southern Fujian Province in China. Trace metals can cause adverse impacts on ecosystems and human health. In order to assess the ecological and human health risks of trace metals in the Golden Triangle region and to determine the distribution and degree of pollution of trace metals, 456 soil samples were collected from 28 districts. The concentrations of six metals (As, Cr, Cu, Ni, Pb, and Zn) were analyzed to assess ecological risk using the geoaccumulation index (Igeo) and the potential ecological risk index (RI). The United States Environmental Protection Agency (USEPA) model was applied to calculate health risk. The average soil concentrations of the six elements are ranked as follows: As < Ni < Cu < Cr < Pb < Zn. Inverse distance weighting (IDW) interpolation maps showed that Cr, Cu, Ni, and Zn are enriched in the soils of developed areas, while As and Pb are enriched in the soils of undeveloped areas. The Igeo showed that the levels of metals in most soil samples are below polluting levels. Similarly, RI values indicated that trace metals pose low potential ecological risk in the region’s soils. The Hazard Quotient (HQ) ranked the mean total noncarcinogenic risk of the six metals, for both children and adults, as follows: As > Pb > Cr > Ni > Cu >Zn. The mean carcinogenic risk (CR) of the metals in the region’s soils are ranked as follows: Cr > As > Ni. The Hazard Index (HI) values indicated that 3.7% of soils contained unsafe levels of toxic metals for children and total carcinogenic risk (TCR) values indicated that 23.3% of soils contained unsafe levels, indicating that children are facing both noncarcinogenic and carcinogenic risks from trace metals. Principal component analysis (PCA) and matrix cluster analysis were used to identify pollution sources and classified trace metals and soil samples into two and five groups, respectively. The five groups represented the effects of different land use types, including agricultural area, residential and public area, industrial area, forest, and industrial area and roadside, based on the contents of trace metals in soils. Industrial, agricultural and traffic activities attribute to the enrichment of Cr, Cu, Ni, Pb, and Zn in the region’s soils. Moreover, the accumulation of As and Pb are also attributed to atmospheric deposition. These results can contribute to a better understanding of pollution, ecological risks, and human health risks from trace metals on large regional scales like the Golden Triangle of Southern Fujian Province.
机译：近年来，密集的工业化和快速的城市化加快了闽南金三角地区表层土壤中微量金属的积累。微量金属可能对生态系统和人类健康造成不利影响。为了评估金三角地区微量金属的生态和人类健康风险，并确定微量金属的分布和污染程度，从28个地区收集了456个土壤样品。使用地质累积指数（Igeo）和潜在生态风险指数（RI）分析了六种金属（砷，铬，铜，镍，铅和锌）的浓度，以评估生态风险。美国环境保护局（USEPA）模型用于计算健康风险。六个元素的平均土壤浓度排名如下：As Pb> Cr> Ni> Cu> Zn。该地区土壤中金属的平均致癌风险（CR）排名如下：Cr> As> Ni。危害指数（HI）值表明，3.7％的土壤中含有不安全的儿童有毒金属水平，总致癌风险（TCR）值表明23.3％的土壤中含有不安全的水平，表明儿童既面临非致癌风险，又面临致癌风险微量金属。使用主成分分析（PCA）和矩阵聚类分析来识别污染源，并将痕量金属和土壤样品分别分为两组和五组。根据土壤中痕量金属的含量，这五组代表了不同土地利用类型的影响，包括农业区，住宅和公共区，工业区，森林，工业区和路边。工业，农业和交通活动归因于该地区土壤中Cr，Cu，Ni，Pb和Zn的富集。此外，砷和铅的积累也归因于大气沉积。这些结果可有助于更好地了解大范围区域（例如闽南金三角）中的痕量金属对污染，生态风险和人类健康的危害。

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