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| Spatial Distribution, Fractionation and Pollution Assessment of Heavy Metals in Wanzhuang Gold Mining Field in Upstream Part of Water Conservation Area of Beijing, China |
| Received:June 11, 2014 |
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| KeyWord:soil;heavy metals;spatial distribution;fraction analysis;geo-accumulation |
| Author Name | Affiliation | E-mail | | ZHANG Ai-xing | Civil & Environment Engineering School, University of Science & Technology Beijing, Beijng 100083, China
National Environment & Energy International Cooperation, University of Science & Technology Beijing, Beijng 100083, China | | | NI Yi-ning | Civil & Environment Engineering School, University of Science & Technology Beijing, Beijng 100083, China
National Environment & Energy International Cooperation, University of Science & Technology Beijing, Beijng 100083, China | | | JI Hong-bing | Civil & Environment Engineering School, University of Science & Technology Beijing, Beijng 100083, China
National Environment & Energy International Cooperation, University of Science & Technology Beijing, Beijng 100083, China
The Key Laboratory of Metropolitan Eco-Environmental Processes, College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China | jih_0000@126.com | | FENG Jin-guo | Beijing Geo-engineering Design and Research Institute, Beijing 101500, China | | | QIN Fei | Civil & Environment Engineering School, University of Science & Technology Beijing, Beijng 100083, China
National Environment & Energy International Cooperation, University of Science & Technology Beijing, Beijng 100083, China | |
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| Abstract: |
| The objective of this study was to investigate the spatial distribution, fractionation and contamination degree of heavy metals in soils of gold mine and tailings of Pinggu in Beijing. The spatial distributions of As, Cd, Cu, Pb, and Zn were basically the same. Their pollution was more serious in the gold mining and surrounding area, which was obviously affected by human activities. However, the spatial distribution of Cr and Ni showed that the most polluted area was the tailings. Exchange and reducible fractions of Cd accounted for about 20%~30% of the total Cd, respectively. Zinc and Pb were dominated by reducible fraction, which is potential pollution source. Pb, As, Hg, Zn, and Cd came mainly from mine mining, metal smelting and other human activities. The geo-accumulation index showed that the studied areas were seriously polluted by Pb, As and Cd, but slightly by Ni and Cr. The soils had not been contaminated by Hg. Some sample points showed mild and moderate Cu pollution. |
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