With the purpose of investigate the characteristics and provenances of the hazardous trace elements (HTEs) in a typical agricultural land in the undulating plain area of eastern Anhui province, China, a total of 1170 soil samples were collected. Six HTEs, including Cd, Cr, Hg, Ni, Pb, and As, were determined. Statistical methods including box plot, Pearson correlation analysis, principal component analysis, and cluster analysis, were conducted to illustrate the provenances of HTEs. Results indicate that Cd and Hg were influenced by human activities (such as traffic transportation for Cd and Pb, and chemical pesticides for Hg). Cr, Ni, and As mainly originated from the parent materials (e.g., red detrital rocks, carbonate rocks, and late Pleistocene loess). Pb is of dual provenances of both human activity and parent material. In a word, regarding highly toxic HTEs, the soil in the study area is almost free from pollution, and only a small amount of soil samples contains slightly higher contents of As, Cd and Pb.

中文翻译：

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皖东典型农业区土壤有害微量元素的特征与来源

为了调查安徽省东部起伏平原地区典型农业用地中有害微量元素（HTE）的特征和来源，共收集了1170个土壤样品。确定了六种HTE，包括Cd，Cr，Hg，Ni，Pb和As。进行了包括箱形图，Pearson相关分析，主成分分析和聚类分析在内的统计方法，以说明HTE的来源。结果表明，Cd和Hg受人类活动（例如Cd和Pb的交通运输以及Hg的化学农药）的影响。Cr，Ni和As主要来源于母体材料（例如红色碎屑岩，碳酸盐岩和晚更新世黄土）。铅具有人类活动和母体物质的双重来源。一句话