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| Analysis of the sources and characteristics of heavy metals in farmland soil from a typical district in Anhui Province |
| Received:June 27, 2017 |
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| KeyWord:agricultural land;soil;heavy metals;multivariate statistical analysis;geostatistical;PMF model |
| Author Name | Affiliation | E-mail | | YIN Guo-qing | Institute of Resource Environment and Information Technology, Anhui Agricultural University, Hefei 230036, China | | | JIANG Hong | Institute of Resource Environment and Information Technology, Anhui Agricultural University, Hefei 230036, China | | | WANG Qiang | Institute of Resource Environment and Information Technology, Anhui Agricultural University, Hefei 230036, China | | | NIE Jing-ru | Institute of Resource Environment and Information Technology, Anhui Agricultural University, Hefei 230036, China | | | MA You-hua | Institute of Resource Environment and Information Technology, Anhui Agricultural University, Hefei 230036, China | yhma@ahau.edu.cn | | HU Hong-xiang | Institute of Resource Environment and Information Technology, Anhui Agricultural University, Hefei 230036, China | |
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| Abstract: |
| To explore soil heavy metals concentrations and pollution sources in farmland from the southern mountain area in Anhui Province, 314 soil samples were collected from a typical area in Anhui Province to analyze Cd, Hg, As, Pb, and Cr in soils. The concentrations, sources, and spatial characteristics of soil heavy metals from the study area were analyzed with multivariate statistical analysis, positive matrix factorization(PMF) model, and geostatistical analysis. The results showed that the average concentrations of Cd, Hg, As, Pb, and Cr in farmland soils were 0.32, 0.1, 14.38, 49.44 mg·kg-1, and 87.42 mg·kg-1, respectively, with 26.93%, 3.81%, 23.47%, 3.35%, and 2.23% over standard rates. The Cd and As concentrations were higher in diluvium and alluvium parent materials, while Hg and Cr concentrations were higher in diluvium parent material. According to the PMF model, the sources of heavy metals in farmland soil were industrial and mining activities(39.6%), traffic pollution and comprehensive atmospheric deposition pollution sources(42.3%), and parent material sources(18.1%). |
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