中国徐州北部农田和煤炭资源重叠区土壤中重金属的分异与潜在生态风险。
Speciation and Potential Ecological Risk of Heavy Metals in Soils from Overlapped Areas of Farmland and Coal Resources in Northern Xuzhou, China.
机构信息
School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou, China.
School of Mines, China University of Mining and Technology, Xuzhou, China.
出版信息
Bull Environ Contam Toxicol. 2021 Dec;107(6):1053-1058. doi: 10.1007/s00128-021-03148-0. Epub 2021 Mar 1.
Contamination caused by heavy metals (HMs) in soil of overlapped area of farmland and coal resources (OAFCR) has impact on crops. The concentrations and speciation of As, Cd, Cr, Cu, Pb and Zn were investigated in topsoil of an OAFCR in Xuzhou, China. The results showed that mean concentrations of all six metals were higher than the background values of Xuzhou city and Cd was moderate accumulated with the maximum I equalled to 2.13. Cd showed moderate contamination level (IP = 1.75) and potential ecological risk (Er = 44.06). Most of the total Cr, Cu, Ni, Pb, and Zn were presented in the residual forms (above 60%), and the percentages of reducible, oxidisable and residual forms of Pb were 23%, 21% and 43% respectively. Pb and Cd reflected a moderate degree of potential ecological risk and a considerable migration risk and ecotoxicity.
农田与煤炭资源重叠区（OAFCR）土壤中重金属（HMs）的污染会对农作物产生影响。本研究调查了中国徐州 OAFCR 表层土壤中 As、Cd、Cr、Cu、Pb 和 Zn 的浓度和形态。结果表明，六种金属的平均浓度均高于徐州市的背景值，Cd 呈中度积累状态，最大 I 值等于 2.13。Cd 呈现出中度污染水平（IP=1.75）和潜在生态风险（Er=44.06）。大部分总 Cr、Cu、Ni、Pb 和 Zn 以残渣态为主（超过 60%），Pb 的可还原态、可氧化态和残渣态的百分比分别为 23%、21%和 43%。Pb 和 Cd 反映出中等程度的潜在生态风险和相当大的迁移风险和生态毒性。
Zotero 插件