Polychlorinated dibenzo-p-dioxins and dibenzofurans in eggs of eight avian species from Dongting Lake, China
文献类型：期刊论文
| 作者 | Fang, Liping ; Zheng, Minghui ; Zhang, Bing ; Gao, Lirong ; Liu, Wenbing ; Zhao, Xingru |
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2007-09 |
| 卷号 | 69期号:3页码:411-421 |
| 关键词 | avian eggs dongting lake Dioxins risk assessment |
| 英文摘要 | Concentrations of polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs) were determined in eggs of eight avian species collected from Dongting Lake of China to assess residue levels, accumulation patterns, and toxic potential in different avian species. Concentrations of total 2,3,7,8-substituted PCDD/Fs were in the range of 10.8-182 pg g(-1) lipid weight. Eggs of great egret and lesser pied kingfisher contained higher levels of PCDD/Fs than eggs of other species, indicating the specific exposure and accumulation of PCDD/Fs relating to feeding habits and the life span. PCDD/Fs congener patterns varied among species. The patterns of PCDD/Fs in the eggs may be influenced by feeding habits, specific elimination, and metabolism. In general, concentrations of PCDDs were higher than those of PCDFs in avian eggs. On basis of lipid weight, total 2,3,7,8-TCDD toxic equivalents (TEQs) calculated based on the WHO TEFs for birds ranged from 2.04 to 42.0 pg g(-1); and on basis of wet weight, total WHO-TEQs ranged from 0.19 to 1.59 pg g(-1). 2,3,7,8-TCDF, 2,3,4,7,8-PeCDF, 2,3,7,8-TCDD, 1,2,3,7,8-PeCDD were the major contributors to TEQ concentration in most avian eggs, whereas 1,2,3,4,7,8-HxCDD also accounted for a major portion of TEQs in eggs of azure-winged magpie. Values of TEQs in avian eggs were lower than toxic threshold values, implying risk reduction and natural restoration of PCDD/Fs contamination in Dongting Lake region. (C) 2007 Elsevier Ltd. All rights reserved. |
| WOS记录号 | WOS:000249544900008 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/22496]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Fang, Liping,Zheng, Minghui,Zhang, Bing,et al. Polychlorinated dibenzo-p-dioxins and dibenzofurans in eggs of eight avian species from Dongting Lake, China[J]. CHEMOSPHERE,2007,69(3):411-421. |
| APA | Fang, Liping,Zheng, Minghui,Zhang, Bing,Gao, Lirong,Liu, Wenbing,&Zhao, Xingru.(2007).Polychlorinated dibenzo-p-dioxins and dibenzofurans in eggs of eight avian species from Dongting Lake, China.CHEMOSPHERE,69(3),411-421. |
| MLA | Fang, Liping,et al."Polychlorinated dibenzo-p-dioxins and dibenzofurans in eggs of eight avian species from Dongting Lake, China".CHEMOSPHERE 69.3(2007):411-421. |
入库方式： OAI收割
来源：生态环境研究中心
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