Sources of polychlorinated dibenzo-p-dioxins and dibenzofurans, and biphenyls in Chinese mitten crabs

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境化学与生态毒理学国家重点实验室

	Sources of polychlorinated dibenzo-p-dioxins and dibenzofurans, and biphenyls in Chinese mitten crabs
	Su, Guijin; Xiao, Ke; Gao, Lirong; Rao, Kaifeng; Zhu, Wen; Liu, Wenbin; Han, Ying; Liu, Guorui
刊名	CHEMOSPHERE
	2018-04-01
卷号	196 页码:522-530
关键词	PCDD/Fs PCBs Chinese mitten crab Food web Bioaccumulation Dietary exposure
ISSN号	0045-6535
文献子类	Article
英文摘要	Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) and polychlorinated biphenyls (PCBs) in Chinese mitten crabs from several areas were determined. The toxic equivalents (TEQs) for the mean PCDD/F and total PCDD/F and dioxin-like PCBs were 2.9 +/- 2.7 and 5.7 +/- 4.0 pg TEQ g(-1), respectively. The mean concentrations of PCBs and dl-PCBs were 282 and 59 times the concentrations of PCDD/Fs, respectively. PCDD/F and PCB sources in the crab food web were assessed. The total TEQ of PCDD/F and PCB supplied by crab compound feed was 2.1 times the TEQ in crab meat. Broken corn, aquatic biota, and water contributed around 12% of the total TEQinputs for crab meat. The contribution from sediment was around 164 times that from crab meat, and sediment may be the most important source of PCDD/Fs and PCBs in cultured crabs. Principal component analysis (PCA) and stable isotope ratios for nitrogen (delta N-15) and carbon (delta C-13) supported the TEQ results. The mean total PCDD/F and dl-PCB TEQ exposure for humans consuming crabs was 3.4 pg TEQ per kilogram of body weight per day. The PCDD/Fs and PCBs in >80% of the crab samples would not cause the tolerable daily intake to be exceeded. (C) 2018 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/41045]
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	Su, Guijin,Xiao, Ke,Gao, Lirong,et al. Sources of polychlorinated dibenzo-p-dioxins and dibenzofurans, and biphenyls in Chinese mitten crabs[J]. CHEMOSPHERE,2018,196:522-530.
APA	Su, Guijin.,Xiao, Ke.,Gao, Lirong.,Rao, Kaifeng.,Zhu, Wen.,...&Liu, Guorui.(2018).Sources of polychlorinated dibenzo-p-dioxins and dibenzofurans, and biphenyls in Chinese mitten crabs.CHEMOSPHERE,196,522-530.
MLA	Su, Guijin,et al."Sources of polychlorinated dibenzo-p-dioxins and dibenzofurans, and biphenyls in Chinese mitten crabs".CHEMOSPHERE 196(2018):522-530.