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中文摘要：
结合当地气象条件,采集了某典型燃煤电厂周边地区的土壤,分析其总汞和汞形态分布,应用层次聚类分析、富集因子分析等方法研究土壤汞的潜在来源情况,并利用主成份分析/绝对主成分分数（PCA/APCS）受体模型定量解析了土壤中汞的来源,结果表明：电厂周边土壤汞含量明显受到电厂汞排放影响,表层土壤样品（0-20 cm）汞含量范围为0.015-0.076 mg/kg,平均值为0.030 mg/kg,Hg的变异系数达43.4%;且随土壤剖面深度的增加土壤汞含量明显降低,表土层中汞平均含量达到59.98 ng/g,是60 cm以下底土层汞含量（19.40 ng/g）的3倍以上,表土层土壤汞含量与降尘（r=0.999^＊＊）、降水（r=0.979^＊）汞含量显著相关;表土层人为输入的汞不仅增加了总汞量,也增加了水溶态汞、酸溶态汞和碱溶态汞等活性汞的比例,提高了汞的环境危险性。由APCS源解析结果可知,土壤中汞的来源以源1为主,来源贡献率为40.92%,其次为源2（来源贡献率为31.48%）、源3（来源贡献率为11.97%）、其他源（来源贡献率为8.35%）和源4（来源贡献率为7.28%）。结合相关系数、主成分分析和层次聚类分析,可以进一步推测源1可能为交通和工业因子源,源2可能为成土母质源,源3可能为工农业活动因子源,源4可能为燃煤因子源。
英文摘要：
Samples of soil around a coal-fired power plant were collected and the concentrations of THg and Hg species were analyzed. The hierarchical cluster analysis, enrichment factor analysis and principal component analysis/absolute principal component scores（PCA/APCS）receptor model were combined to identify and quantitatively apportion the pollution sources of soil Hg. The results showed that Hg content significantly decreased with depth reducing,the surface layer soil Hg content was significantly related to that of precipitation and dust;the anthropogenic input Hg not only increased THg but also increased the water-soluble Hg,HCl-soluble Hg and KOH-soluble Hg,which increased the environmental risk of mercury.Five sources and their contribution rates,obtained using the receptor model,were as follows：Source Ⅰ with source contribution rate of 40.92%,Source Ⅱ 31.48%,Source Ⅲ 11.97%,Source Ⅳ 7.28% and other sources 8.35%. Based on the correlation coefficient,PCA analysis and hierarchical clustering analysis of the source contributions,Source Ⅰ may originate from traffic and industrial,Source Ⅱ may inherited from soil parent materials,Source Ⅲ may come from industrial and agricultural activity,and Source Ⅳ should be burning coal.
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