| Autor: |
Zheng, Liugen1 (AUTHOR) lgzheng@ustc.edu.cn, Liu, Xu1 (AUTHOR), Tang, Quan2 (AUTHOR), Ou, Jinping3 (AUTHOR) |
| Předmět: |
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| Zdroj: |
Bulletin of Environmental Contamination & Toxicology. Jul2019, Vol. 103 Issue 1, p10-15. 6p. 3 Charts, 3 Graphs, 1 Map. |
| Abstrakt: |
In this study, the provenance of anthropogenic lead, a major pollutant of surface sediments, was determined in Huainan Panji coal mining area. The lead concentrations and the pollution degree were investigated by the enrichment factor. Tessier five-step morphology extraction method was used to discuss its potential hazard. By comparing the lead isotope ratios of surface sediments and surrounding potential polluted end-members, the lead isotope ternary mixture model was appropriated to explore the sources and relative contribution fractions. The results showed that: (1) The lead concentrations ranged from 31.44 to 64.07 mg/kg which was mild-moderate pollution. (2) The chemical forms of lead were residue state > iron-manganese oxidation state > exchangeable state > organic state > carbonate state. (3) The anthropogenic lead in surface sediments originated from soil, vehicle exhaust, coal gangue. And the relative contribution fractions were 51.70%, 30.90%, and 17.40%. [ABSTRACT FROM AUTHOR] |
| Databáze: |
GreenFILE |
| Externí odkaz: |
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