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学科主题: 地理学::自然地理学
题名: Biomagnification of persistent organic pollutants along a high-altitude aquatic food chain in the Tibetan Plateau: Processes and mechanisms
作者: Ren, J (Ren, Jiao)1, 3; Wang, XP (Wang, Xiaoping)1, 2; Wang, CF (Wang, Chuanfei)1, 2; Gong, P (Gong, Ping)1, 2; Wang, XR (Wang, Xiruo)4; Yao, TD (Yao, Tandong)1, 2
通讯作者: Wang, XP
关键词: HIGH-MOUNTAIN LAKES ; POLYCYCLIC AROMATIC-HYDROCARBONS ; POLYBROMINATED DIPHENYL ETHERS ; TROUT SALVELINUS-NAMAYCUSH ; ORGANOCHLORINE PESTICIDES ; TROPHIC TRANSFER ; TOXIC-SUBSTANCES ; TEMPORAL TRENDS ; GREAT-LAKES ; BARENTS SEA
刊名: ENVIRONMENTAL POLLUTION
发表日期: 2017
DOI: 10.1016/j.envpol.2016.10.019
卷: 220, 期:0, 页:636-643
收录类别: SCI
合作性质: 国内
文章类型: Article
类目[WOS]: Environmental Sciences ; Environmental Sciences & Ecology
研究领域[WOS]: Environmental Sciences & Ecology
英文摘要: Biomagnification of some persistent organic pollutants (POPS) has been found in marine and freshwater food chains; however, due to the relatively short food chains in high-altitude alpine lakes, whether trophic transfer would result in the biomagnification of POPs is not clear. The transfer of various POPs, including organochlorine pesticides and polychlorinated biphenyls (PCBs), along the aquatic food chain in Nam Co Lake (4700 m), in the central Tibetan Plateau, was studied. The POPs levels in the water, sediment and biota [plankton, invertebrates and fish (Gymnocypris namensis)] of Nam Co were generally low, with concentrations comparable to those reported for the remote Arctic. The composition profiles of POPs in the fish were different from that in the water, but similar to their food. DDEs, DDDs, PCB 138,153 and 180 displayed significant positive correlations with trophic levels, with trophic magnification factors (TMEs) ranged between 1.5 and 4.2, implying these chemicals can undergo final biomagnification along food chain. A fugacity-based dynamic bioaccumulation model was applied to the fish with localized parameters, by which the simulated concentrations were comparable to the measured data. Modeling results showed that most compounds underwent net gill loss and net gut uptake; only when the net result of the combined gut and gill fluxes would be positive, bioaccumulation could eventually occur. The net accumulation flux increased with fish age, which was caused by the continuous increase of gut uptake by aged fish. Due to the oligotrophic condition, efficient food absorption is likely the key factor that influences the gut POPs uptake. Long residence times with half-lives up to two decades were found for the higher chlorinated PCBs in Gymnocypris namensis. (C) 2016 Elsevier Ltd. All rights reserved.
语种: 英语
WOS记录号: WOS:000390736700069
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/8404
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface P, Beijing 100101, Peoples R China.
2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China.
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
4.Jinan Univ, Guangzhou Key Lab Environm Exposure & Hlth, Sch Environm, Guangdong Key Lab Environm Pollut & Hlth, Guangzhou 510632, Guangdong, Peoples R China.

Recommended Citation:
Ren, J ,Wang, XP ,Wang, CF ,et al. Biomagnification of persistent organic pollutants along a high-altitude aquatic food chain in the Tibetan Plateau: Processes and mechanisms[J]. ENVIRONMENTAL POLLUTION,2017,220(0):636-643.
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