中文摘要：

对广东某含铊黄铁矿冶炼废渣堆渣场周围土壤铊污染状况进行了研究与评价。结果表明,废渣周围土壤已受到了明显的铊污染,污染物主要集中在土壤0~16.5 cm范围,并且表现出沿垂直方向向下迅速降低的特点;土壤表层的铊吸附量未达到饱和状态,铊污染物将继续在土壤表层发生累积作用。地累积指数法评价的结果是：废渣下伏土壤0~6 cm范围铊达到中度污染水平,而在土壤约14.5 cm以下没有受到铊的污染;相对于下伏土壤,废渣外围土壤污染更为严重,其中土壤0~1cm铊已经达到中~强度污染,土壤1~5 cm范围铊为中度污染,而在土壤约14.5 cm以下没有受到铊的污染。地质累积指数法应用于土壤铊污染评价是可行的,但是不能表明铊在土壤中存在状态、迁移能力以及生物有效性。

英文摘要：

An investigation was carried out and to assess thallium pollution on soils around a thallium-containing slag pile site near a Sulphuric Acid Plant in Guangdong Province.It was found that thallium pollutants were mainly concentrated in the surface layer（0-16.5 cm） of the soil and showed a rapidly decreasing trend with the soil vertical depth.But the adsorption capability of Tl was not saturated for the surface soil layer.As a result,the thallium pollutant accumulation could be more and more serious in the future.Applying Igeo method,we concluded that of the degree of Tl contamination was more serous in exterior profile than that of the inner profile under slag.Tl pollution in the deeper soil layer was much minor than that of the surface layer（0-6 cm）,and for the exterior soil,the soil layer at 1cm and 5cm depth showed strong,middle contamination,and the deeper soil（14.5 cm） showed no contamination,respectively.The method of Igeo to evaluate the Tl pollution in soil is suitable,but this method can not interpret the phases,migration and bioavailability of Tl in soil.