PMID- 27751636
OWN - NLM
STAT- MEDLINE
DCOM- 20170421
LR  - 20181202
IS  - 1873-6424 (Electronic)
IS  - 0269-7491 (Linking)
VI  - 220
IP  - Pt A
DP  - 2017 Jan
TI  - Biomagnification of persistent organic pollutants along a high-altitude aquatic 
      food chain in the Tibetan Plateau: Processes and mechanisms.
PG  - 636-643
LID - S0269-7491(16)31662-1 [pii]
LID - 10.1016/j.envpol.2016.10.019 [doi]
AB  - 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 
      (TMFs) 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.
CI  - Copyright A(c) 2016 Elsevier Ltd. All rights reserved.
FAU - Ren, Jiao
AU  - Ren J
AD  - Key Laboratory of Tibetan Environment Changes and Land Surface Processes, 
      Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 
      100101, China; University of Chinese Academy of Sciences, Beijing 100049, China.
FAU - Wang, Xiaoping
AU  - Wang X
AD  - Key Laboratory of Tibetan Environment Changes and Land Surface Processes, 
      Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 
      100101, China; CAS Center for Excellence in Tibetan Plateau Earth Sciences, 
      Beijing 100101, China. Electronic address: wangxp@itpcas.ac.cn.
FAU - Wang, Chuanfei
AU  - Wang C
AD  - Key Laboratory of Tibetan Environment Changes and Land Surface Processes, 
      Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 
      100101, China; CAS Center for Excellence in Tibetan Plateau Earth Sciences, 
      Beijing 100101, China.
FAU - Gong, Ping
AU  - Gong P
AD  - Key Laboratory of Tibetan Environment Changes and Land Surface Processes, 
      Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 
      100101, China; CAS Center for Excellence in Tibetan Plateau Earth Sciences, 
      Beijing 100101, China.
FAU - Wang, Xiruo
AU  - Wang X
AD  - School of Environment, Guangzhou Key Laboratory of Environmental Exposure and 
      Health, Guangdong Key Laboratory of Environmental Pollution and Health, Jinan 
      University, Guangzhou 510632, China.
FAU - Yao, Tandong
AU  - Yao T
AD  - Key Laboratory of Tibetan Environment Changes and Land Surface Processes, 
      Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 
      100101, China; CAS Center for Excellence in Tibetan Plateau Earth Sciences, 
      Beijing 100101, China.
LA  - eng
PT  - Journal Article
DEP - 20161015
PL  - England
TA  - Environ Pollut
JT  - Environmental pollution (Barking, Essex : 1987)
JID - 8804476
RN  - 0 (Hydrocarbons, Chlorinated)
RN  - 0 (Pesticides)
RN  - 0 (Water Pollutants, Chemical)
RN  - 7Y6JIG1867 (2,2',3',4,4',5-hexachlorobiphenyl)
RN  - DFC2HB4I0K (Polychlorinated Biphenyls)
SB  - IM
MH  - *Altitude
MH  - Animals
MH  - Aquatic Organisms/*metabolism
MH  - Biota
MH  - *Environmental Monitoring
MH  - Fishes/metabolism
MH  - *Food Chain
MH  - Geologic Sediments/*chemistry
MH  - Hydrocarbons, Chlorinated/analysis/metabolism
MH  - Invertebrates/metabolism
MH  - Lakes/*chemistry
MH  - Pesticides/analysis/metabolism
MH  - Polychlorinated Biphenyls/analysis/metabolism
MH  - Seafood/analysis
MH  - Tibet
MH  - Water Pollutants, Chemical/*analysis/metabolism
OTO - NOTNLM
OT  - Alpine lakes
OT  - Biomagnification
OT  - Dietary uptake
OT  - Persistent organic pollutants
OT  - Tibetan Plateau
EDAT- 2016/10/19 06:00
MHDA- 2017/04/22 06:00
CRDT- 2016/10/19 06:00
PHST- 2016/06/16 00:00 [received]
PHST- 2016/09/03 00:00 [revised]
PHST- 2016/10/07 00:00 [accepted]
PHST- 2016/10/19 06:00 [pubmed]
PHST- 2017/04/22 06:00 [medline]
PHST- 2016/10/19 06:00 [entrez]
AID - S0269-7491(16)31662-1 [pii]
AID - 10.1016/j.envpol.2016.10.019 [doi]
PST - ppublish
SO  - Environ Pollut. 2017 Jan;220(Pt A):636-643. doi: 10.1016/j.envpol.2016.10.019. 
      Epub 2016 Oct 15.