Preliminary hazard assessment of polychlorinated biphenyls, polybrominated diphenyl ethers, and polychlorinated dibenzo-p-dioxins and dibenzofurans to Yangtze finless porpoise in Dongting Lake, China | |
Yang, Fangxing ; Zhang, Qinghua ; Xu, Ying ; Jiang, Guibin ; Wang, Yawei ; Wang, Ding | |
刊名 | ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY |
2008-04 | |
卷号 | 27期号:4页码:991-996 |
关键词 | -hazard assessment polychlorinated biphenyls polybrominated diphenyl ethers polychlorinated dibenzo-p-dioxins/dibenzofurans Yangtze finless porpoise |
英文摘要 | Yangtze finless porpoise (Neophocaena phocaenoides asiaeorientalis), a protected endangered species, is the sole freshwater subspecies of finless porpoise, living only in the middle and lower reaches of the Yangtze River, China, and its appended lakes. Its population has decreased sharply to 1,400 because of human activities, including environmental contamination. In the present study, polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), and polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) were determined in the blubber, liver, kidney, stomach, small intestine, and brains of five individual Yangtze finless porpoises collected from 1998 to 2004. The results showed PCB concentrations ranged from 0.06 to 1.89 mu g/g lipid weight in the organs and consisted mainly of penta-, hexa-. and decachlorinated biphenyls. The PBDE concentrations were between 5.32 and 72.76 ng/g lipid weight. Tetra-, penta-, and hexabrominated diphenyl ethers were the major homologues. The PCDD/F concentrations ranged from 65 to 1,563 pg/g lipid weight, and their predominant homologues were penta- and hexachlorinated dibenzofurans and hepta- and octachlorinated dibenzo-p-dioxins. The hazard quotients (HQs) based on toxic equivalency were determined to be greater than one in all individuals for PCBs, for PCDD/Fs, and for PCBs and PCDD/Fs In addition, HQs would be higher if PBDEs were included. The results suggest that reduction of environmental contamination may contribute greatly to protecting this highly endangered species. |
WOS记录号 | WOS:000253950500026 |
内容类型 | 期刊论文 |
源URL | [http://ir.rcees.ac.cn/handle/311016/21980] |
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 | Yang, Fangxing,Zhang, Qinghua,Xu, Ying,et al. Preliminary hazard assessment of polychlorinated biphenyls, polybrominated diphenyl ethers, and polychlorinated dibenzo-p-dioxins and dibenzofurans to Yangtze finless porpoise in Dongting Lake, China[J]. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY,2008,27(4):991-996. |
APA | Yang, Fangxing,Zhang, Qinghua,Xu, Ying,Jiang, Guibin,Wang, Yawei,&Wang, Ding.(2008).Preliminary hazard assessment of polychlorinated biphenyls, polybrominated diphenyl ethers, and polychlorinated dibenzo-p-dioxins and dibenzofurans to Yangtze finless porpoise in Dongting Lake, China.ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY,27(4),991-996. |
MLA | Yang, Fangxing,et al."Preliminary hazard assessment of polychlorinated biphenyls, polybrominated diphenyl ethers, and polychlorinated dibenzo-p-dioxins and dibenzofurans to Yangtze finless porpoise in Dongting Lake, China".ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 27.4(2008):991-996. |
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