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| Spatial Distribution, Toxicity and Source Apportionment of PAHs in Sediments from Rivers Around Taihu Lake |
| Received:October 10, 2014 |
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| KeyWord:PAHs;river sediments;source apportionment;toxicity;Taihu Lake |
| Author Name | Affiliation | E-mail | | ZHAO Xue-qiang | College of Environment, Hohai University, Nanjing 210098, China | | | YUAN Xu-yin | College of Environment, Hohai University, Nanjing 210098, China | yxy_hjy@hhu.edu.cn | | LI Tian-yuan | College of Environment, Hohai University, Nanjing 210098, China | | | WANG Bing | College of Environment, Hohai University, Nanjing 210098, China | | | CHEN Hong-yan | College of Environment, Hohai University, Nanjing 210098, China | |
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| Abstract: |
| In this study, the concentrations of 16 US EPA priority PAHs were analyzed from 41 sediment samples collected from rivers around Taihu Lake, and their distributions, sources and ecological risks were further investigated. The total concentrations of PAHs ranged from 382.5～2 268.7 ng·g-1 with a mean value of 1 056.6 ng·g-1, while TEQBap varied from 36.3～224.0 ng·g-1 with an average of 98.8 ng·g-1. The sample in Longyou River(TR8) had the highest concentration of PAHs, followed by Caoqiao River(TR10), which are located to the north of Taihu Lake. The major contributors to total PAHs in sediments were gasoline and diesel combustion(44.6%), followed by coal combustion(39.1%), and biomass combustion(16.3%). The fossil fuel combustion was the greatest contributor to the toxicity of PAHs in river sediments. |
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