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Composition, sources, and potential toxicological significance of PAHs in the surface sediments of the Meiliang Bay, Taihu Lake, China
文献类型：期刊论文
| 作者 | Qiao, M; Wang, CX; Huang, SB; Wang, DH ; Wang, ZJ
|
| 刊名 | ENVIRONMENT INTERNATIONAL
 |
| 出版日期 | 2006 |
| 卷号 | 32期号:1页码:28-33 |
| 关键词 | PAHs origin indices sediment quality guidelines TEQS(care) |
| 英文摘要 | Twenty-five surface sediment samples were collected from Meiliang Bay, Taihu Lake, China, in 2003. The concentrations of 16 polycyclic aromatic hydrocarbons (PAHs), identified as priority pollutants by the USEPA, were determined by gas chromatography equipped with a mass spectrometry detector (GC-MS). Total concentrations of the PAHs ranged from 1207 to 4754 ng/g dry weight. Sediment samples with the highest PAH concentrations were from the northern site of the bay, which is in proximity to the incoming PAH source; the PAH levels in the southern part were relatively low. The observed PAH levels were higher than those in river sediments in China but were lower than those found in sediments of urban areas and harbors. According to the observed molecular indices, PAHs originated largely from the high-temperature pyrolytic process, whereas the petrogenic process was more commonly responsible for PAH contamination in harbors. A good correlation existed between the benzo[a]pyrene level and the total PAH concentration (r=0.97), making benzo[a]pyrene a potential molecular marker for PAH pollution. According to the numerical effect-based sediment quality guideline (SQGs) of the United States, the levels of PAHs at most studied sites in Meiliang Bay, except some sites in the northern part of the bay, should not exert adverse biological effects. In the northern part of the bay, the PAH levels at sites 21 and 22 exceed the effects range low (ERL) and could thus cause acute biological impairments, in comparison with the sediment quality guidelines. The total PAH levels were expressed as the B[a]P toxicity equivalents (TEQs(carc)) and compared to the contaminated sediments from Guba Pechenga, Barents Sea, Russia. (C) 2005 Elsevier Ltd. All rights reserved. |
| WOS记录号 | WOS:000234475000004 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/22977]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Qiao, M,Wang, CX,Huang, SB,et al. Composition, sources, and potential toxicological significance of PAHs in the surface sediments of the Meiliang Bay, Taihu Lake, China[J]. ENVIRONMENT INTERNATIONAL,2006,32(1):28-33. |
| APA | Qiao, M,Wang, CX,Huang, SB,Wang, DH,&Wang, ZJ.(2006).Composition, sources, and potential toxicological significance of PAHs in the surface sediments of the Meiliang Bay, Taihu Lake, China.ENVIRONMENT INTERNATIONAL,32(1),28-33. |
| MLA | Qiao, M,et al."Composition, sources, and potential toxicological significance of PAHs in the surface sediments of the Meiliang Bay, Taihu Lake, China".ENVIRONMENT INTERNATIONAL 32.1(2006):28-33. |
入库方式： OAI收割
来源：生态环境研究中心
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