PMID- 31923702 OWN - NLM STAT- MEDLINE DCOM- 20200408 LR - 20200408 IS - 1879-1026 (Electronic) IS - 0048-9697 (Linking) VI - 710 DP - 2020 Mar 25 TI - First evaluation of legacy persistent organic pollutant contamination status of stranded Yangtze finless porpoises along the Yangtze River Basin, China. PG - 136446 LID - S0048-9697(19)36442-3 [pii] LID - 10.1016/j.scitotenv.2019.136446 [doi] AB - Yangtze finless porpoises (Neophocaena asiaeorientalis asiaeorientalis), inhabiting the Yangtze River, are an endangered species in China. They are threatened by various kinds of pollutants, among which persistent organic pollutants (POPs) are of special concern due to their toxicities, high persistency and bioaccumulation potential. To better understand the POP contamination status of Yangtze finless porpoises, an investigation of stranded porpoises along the Yangtze River and adjacent two major lakes in the Yangtze River basin was conducted; the concentrations of four groups of legacy POPs, i.e., hexachlorocyclohexanes (HCHs), dichlorodiphenyltrichloroethanes (DDTs), polybrominated diphenyl ethers (PBDEs), and polychlorinated biphenyl (PCBs), were determined in the blubber samples. The mean concentrations of SigmaHCHs (the sum of all congeners/isomers), SigmaDDTs, SigmaPBDEs and SigmaPCBs, were 1670 +/- 4210, 28,800 +/- 52,300, 141 +/- 174, and 1020 +/- 1070 ng/g lipid weight, respectively; the high DDTs/PCBs ratio reflected a strong influence of agricultural pollution in the Yangtze River basin, and the high alpha/gamma ratio of HCH isomers indicated the usage of lindane in the corresponding areas; the predominance of low-brominated congeners of PBDEs may be related to congruent patterns in the related environmental matrices. A hazard quotient risk assessment revealed that DDTs could pose a relatively high risk to Yangtze finless porpoises compared with the risks posed by the other POPs. CI - Copyright (c) 2019. Published by Elsevier B.V. FAU - Zhang, Kai AU - Zhang K AD - Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; State Key Laboratory of Marine Pollution, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR, China. FAU - Qian, Zhengyi AU - Qian Z AD - Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China; University of Chinese Academy of Sciences, Beijing 100049, China. FAU - Ruan, Yuefei AU - Ruan Y AD - State Key Laboratory of Marine Pollution, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR, China. FAU - Hao, Yujiang AU - Hao Y AD - Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China. FAU - Dong, Weiwei AU - Dong W AD - Bengbu Medical College, Bengbu 233030, China. FAU - Li, Ke AU - Li K AD - Wuhan Institute for Drug and Medical Device Control, Wuhan 430075, China. FAU - Mei, Zhigang AU - Mei Z AD - Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China. FAU - Wang, Kexiong AU - Wang K AD - Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China. FAU - Wu, Chenxi AU - Wu C AD - Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China. FAU - Wu, Jianhong AU - Wu J AD - Wuhan Institute for Drug and Medical Device Control, Wuhan 430075, China. Electronic address: wujianhong8212@163.com. FAU - Zheng, Jinsong AU - Zheng J AD - Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China. Electronic address: zhengjinsong@ihb.ac.cn. FAU - Lam, Paul K S AU - Lam PKS AD - State Key Laboratory of Marine Pollution, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR, China. FAU - Wang, Ding AU - Wang D AD - Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China. LA - eng PT - Journal Article DEP - 20191231 PL - Netherlands TA - Sci Total Environ JT - The Science of the total environment JID - 0330500 RN - 0 (Environmental Pollutants) RN - 0 (Halogenated Diphenyl Ethers) RN - 0 (Water Pollutants, Chemical) RN - DFC2HB4I0K (Polychlorinated Biphenyls) SB - IM MH - Animals MH - China MH - Environmental Monitoring MH - Environmental Pollutants MH - Halogenated Diphenyl Ethers MH - Polychlorinated Biphenyls MH - Porpoises MH - Rivers/*chemistry MH - Water Pollutants, Chemical OTO - NOTNLM OT - Dichlorodiphenyltrichloroethane OT - Hexachlorocyclohexane OT - Polybrominated diphenyl ethers OT - Polychlorinated biphenyl OT - Risk assessment COIS- Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2020/01/11 06:00 MHDA- 2020/04/09 06:00 CRDT- 2020/01/11 06:00 PHST- 2019/11/05 00:00 [received] PHST- 2019/12/29 00:00 [revised] PHST- 2019/12/30 00:00 [accepted] PHST- 2020/01/11 06:00 [pubmed] PHST- 2020/04/09 06:00 [medline] PHST- 2020/01/11 06:00 [entrez] AID - S0048-9697(19)36442-3 [pii] AID - 10.1016/j.scitotenv.2019.136446 [doi] PST - ppublish SO - Sci Total Environ. 2020 Mar 25;710:136446. doi: 10.1016/j.scitotenv.2019.136446. Epub 2019 Dec 31.