Soil Heavy Metal Pollution Around the Dabaoshan Mine, Guangdong Province, China

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Soil Heavy Metal Pollution Around the Dabaoshan Mine, Guangdong Province, China

机译：中国广东省大宝山煤矿周围土壤重金属污染

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Soil contamination in the vicinity of the Dabaoshan Mine, Guangdong Province, China, was studied through determination of total concentrations and chemical speciation of the toxic metals, Cu, Zn, Cd, and Pb, using inductively coupled plasma mass spectrometry. The results showed that over the past decades, the environmental pollution was caused by a combination of Cu, Zn, Cd, and Ph, with tailings and acid mine drainage being the main pollution sources affecting soils.Significantly higher levels (P ≤ 0.05) of Cu, Zn, Cd, and Pb were found in the tailings as compared with paddy, garden,and control soils, with averages of 1486, 2516, 6.42, and 429 mg kg-1, respectively. These metals were continuously dispersed downstream from the tailings and waste waters, and therefore their concentrations in the paddy soils were as high as 567, 1 140, 2.48, and 191 mg kg-1, respectively, being significantly higher (P ≤ 0.05) as compared with those in the garden soils. The results of sequential extraction of the above metals from all the soil types showed that the residual fraction was the dominant form. However, the amounts of metals that were bound to Fe-Mn oxides and organic matter were relatively higher than those bound to carbonates or those that existed in exchangeable forms. As metals could be transformed from an inert state to an active state, the potential environmental risk due to these metals would increase with time.

机译：通过使用电感耦合等离子体质谱法测定有毒金属Cu，Zn，Cd和Pb的总浓度和化学形态，研究了中国广东省大宝山矿附近的土壤污染。结果表明，在过去的几十年中，环境污染是由Cu，Zn，Cd和Ph的结合引起的，尾矿和酸性矿山排水是影响土壤的主要污染源.P <0.05与稻田，花园和对照土壤相比，尾矿中发现的Cu，Zn，Cd和Pb的平均值分别为1486、2516、6.42和429 mg kg-1。这些金属连续地分散在尾矿和废水的下游，因此它们在稻田土壤中的浓度分别高达567、1 140、2.48和191 mg kg-1，显着更高（P≤0.05）。与花园土壤相比。从所有土壤类型中依次提取上述金属的结果表明，残留部分是主要形式。但是，与Fe-Mn氧化物和有机物结合的金属量要比与碳酸盐或可交换形式结合的金属量高。由于金属可能会从惰性状态转变为活性状态，因此这些金属所带来的潜在环境风险会随着时间而增加。

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《土壤圈（英文版）》 |2007年第5期|588-594|共7页
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College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510640,China;

Guangdong Key Laboratory of Agro-Environment Integrated Control, Guangdong Institute of Eco-Environment and Soil Science, Guangzhou 510650,China;

College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510640,China;

College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510640,China;

State Key Laboratory of Environment Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002,China;

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收录信息中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
原文格式 PDF
正文语种 chi
中图分类农业基础科学;
关键词
chemical speciation, combined pollution index (CPI), contaminated soil, heavy metals;

机译：化学形态;综合污染指数（CPI）;土壤污染;重金属;
入库时间 2022-08-19 04:04:16

Soil Heavy Metal Pollution Around the Dabaoshan Mine, Guangdong Province, China

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