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| 论文编号: |
120 |
| 论文题目: |
Tracking historical mobility behavior and sources of lead in the 59-year sediment core from the Huaihe River using lead isotopic compositions |
| 英文论文题目: |
Tracking historical mobility behavior and sources of lead in the 59-year sediment core from the Huaihe River using lead isotopic compositions |
| 第一作者: |
Wang, J |
| 英文第一作者: |
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| 联系作者: |
Liu Guijian |
| 英文联系作者: |
Liu Guijian |
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| 发表年度: |
2017 |
| 卷: |
184 |
| 期: |
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| 页码: |
584-593 |
| 摘要: |
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| 英文摘要: |
A historical perspective of past 59 years (1955-2014) for contamination and isotopic composition of Pb in sediment core system of the Huaihe River, Huainan City, Anhui Province of China is presented. Detailed investigation regarding changes in Pb sources, enrichment factor, sequential extraction and isotopic analysis revealed that high Pb concentrations were detected along the core, especially during the first two decades (1955-1974). Large variations in Pb isotopic compositions were observed, with Pb-206/Pb-207 and Pb-208/Pb-207 values ranging from 1.1504-1.1694, and 2.0817-2.1380, respectively. Diverse Pb sources were identified for sediment contamination over the time. Among anthropogenic sources, metallurgic dust and leaded petrol were on top during 1955-1974, especially when the Great Leap Forward Movement (1958-1960) was in progress in China, the time numerous small industries were established without wastewater treatment facility. However, coal and coal combustion were recognized as the primary sources of Pb emissions for the recent four decades (1974-2014) due to tremendous increase of coal consumption for power and heat generation. Unleaded vehicle exhaust, waste incineration and industrial emission were also sources of Pb during the years 1974-2014. Our estimates based on geochemical and lead isotopic approaches have shown that anthropogenic Pb contributions varied from 4.35 to 92.01%, and 13.28-99.06%, respectively. Assessment of lead speciation indicated an overwhelming presence of reducible fraction (Fe-Mn hydro-(oxides)) in the sediment core, except during 1995-1997, which was thought to be affected by water pollution accidents caused by heavy rainfall. |
| 刊物名称: |
CHEMOSPHERE |
| 英文刊物名称: |
CHEMOSPHERE |
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| 全文链接: |
http://www.sciencedirect.com/science/article/pii/S0045653517309244?via%3Dihub |
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