Probing the distribution and contamination levels of 10 trace metal/metalloids in soils near a Pb/Zn smelter in Middle China
Probing the distribution and contamination levels of 10 trace metal/metalloids in soils near a Pb/Zn smelter in Middle China
复制标题
华中某铅锌冶炼厂附近土壤中10种微量金属/类金属的分布及污染水平探讨
DOI：
10.1007/s11356-013-2407-1
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发表时间：
2014-03-01
影响因子：
5.8
通讯作者：
Sun, Guangyi
中科院分区：
文献类型：
--
作者：
Li, Zhonggen;Feng, Xinbin;Sun, Guangyi
研究了株洲市某大型铅锌冶炼厂周边土壤中Ag、Bi、Co、Cr、Ge、In、Ni、Sb、Sn、Tl等10种微量金属/类金属的水平和垂直分布特征及污染状况。在11个地区（包括10个农业区和1个城市公园区）采集了不同类型的土壤样品，共获得83个表层土壤样品和6个土芯。痕量金属/类金属测定后，由HF和HNO 3的酸性混合物消化电感耦合等离子体质谱法。结果表明，土壤中Ag、Bi、In、Sb、Sn和Tl的含量随着距离铅锌冶炼厂的距离和土壤深度的增加而降低，表明这些元素主要来源于铅锌冶炼作业，并通过大气沉降进入土壤。土壤Ge受冶炼厂的影响较小，而Co、Cr和Ni在大多数采样点和土壤深度中的分布基本均匀，表明它们主要来自自然源。地质富集指数（I（geo））表明，In和Ag是最富集的元素，其次是Sb、Bi和Sn。Cr、Tl、Co、Ni和Ge总体上处于未污染状态。
The horizontal and vertical distribution patterns and contamination status of ten trace metal/metalloids (Ag, Bi, Co, Cr, Ge, In, Ni, Sb, Sn, Tl) in soils around one of the largest Chinese Pb-Zn smelter in Zhuzhou City, Central China, were revealed. Different soil samples were collected from 11 areas, including ten agricultural areas and one city park area, with a total of 83 surface soil samples and six soil cores obtained. Trace metal/metalloids were determined by inductively coupled plasma-mass spectrometry after digestion by an acid mixture of HF and HNO3. The results showed that Ag, Bi, In, Sb, Sn, and Tl contents decreased both with the distance to the Pb-Zn smelter as well as the soil depth, hinting that these elements were mainly originated from the Pb-Zn smelting operations and were introduced into soils through atmospheric deposition. Soil Ge was influenced by the smelter at a less extent, while the distributions of Co, Cr, and Ni were roughly even among most sampling sites and soil depths, suggesting that they were primarily derived from natural sources. The contamination status, as revealed by the geo-accumulation index (I (geo)), indicated that In and Ag were the most enriched elements, followed by Sb, Bi, and Sn. In general, Cr, Tl, Co, Ni, and Ge were of an uncontaminated status.