PMID- 32933786
OWN - NLM
STAT- Publisher
LR  - 20240222
IS  - 1873-6424 (Electronic)
IS  - 0269-7491 (Linking)
DP  - 2020 Jun 7
TI  - New insights into the bioaccumulation of persistent organic pollutants in remote 
      alpine lakes located in Himalayas, Pakistan.
PG  - 114952
LID - S0269-7491(19)36385-7 [pii]
LID - 10.1016/j.envpol.2020.114952 [doi]
AB  - The current study assesses the persistent organic pollutants (POPs) in water and 
      their bioaccumulation in Brown Trout (BT) and Rainbow Trout (RT) present in the 
      remote alpine lakes (RALs) of Himalayas, Pakistan. Hence, these environments 
      might receive POPs by long range atmospheric transport (LRAT) with little 
      interferences from local anthropogenic activities. The potential transportation 
      pathways for such accumulation can be atmospheric precipitation, melting ice and 
      glacial runoff. The results indicated that the sum of mean concentrations of 
      organochlorine pesticides (OCPs (DDTs + HCHs)) in water of Glacial-fed lakes, Ice 
      melting-fed lake and Rain-fed lake ranged from 0.21 to 317, 0.14-293, 
      0.16-235 pg L(-1), respectively, while those of polychlorinated biphenyls (PCBs) 
      are 0.275-16.02, 0-15.88, 0.234-14.46 pg L(-1), respectively. Similarly, the sum 
      of mean concentrations of all investigated PCBs and OCPs in BT ranged from 0.008 
      to 0.715 ng g(-1) and 0.003-3.835 ng g(-1) based on wet weight (ww), while for RT 
      these concentrations were 0.002-0.557 ng g(-1) and 0.001-1.402 ng g(-1) (ww), 
      respectively in the selected RALs. The PCBs and OCPs levels in both water and 
      fish tissues were observed in order of Glacial-fed lakes > Ice melting-fed 
      lake > Rain-fed lake. The results proposed that melting of ice and glacial water 
      are more significant sources of the contaminants (PCBs and OCPs) in the 
      freshwaters of RALs of Himalayas as compared to rainfall water. The positive 
      correlation between water contamination and the selected fish species confirmed 
      that these can be used as a bio-indicator for future research studies. However, 
      the impact of POPs as they cascade through downstream ecosystems remains largely 
      unexplored. The additional study of contaminant dynamics should be extended to a 
      wide range of mountain environments of Himalayas, where melt-water used for 
      drinking and irrigation purposes by billions of people reside alone the waterways 
      that originated from these remote areas.
CI  - Copyright (c) 2020 Elsevier Ltd. All rights reserved.
FAU - Nawab, Javed
AU  - Nawab 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; 
      Department of Environmental Sciences Abdul Wali Khan University Mardan, Pakistan.
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; University of Chinese Academy of Sciences, Beijing, 100049, China. 
      Electronic address: wangxp@itpcas.ac.cn.
FAU - Khan, Sardar
AU  - Khan S
AD  - Department of Environmental Sciences University of Peshawar, Pakistan.
FAU - Tang, Yu-Ting
AU  - Tang YT
AD  - School of Geographical Sciences, Research Group of Natural Resources and 
      Environment, University of Nottingham Ningbo China, Ningbo, 315100, China.
FAU - Rahman, Ziaur
AU  - Rahman Z
AD  - Department of Microbiology, Abdul Wali Khan University Mardan, Pakistan.
FAU - Ali, Abid
AU  - Ali A
AD  - Department of Zoology, Abdul Wali Khan University Mardan, Pakistan.
FAU - Dotel, Jagdish
AU  - Dotel J
AD  - Key Laboratory of Tibetan Environment Changes and Land Surface Processes, 
      Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, 
      100101, China.
FAU - Li, Gang
AU  - Li G
AD  - CAS Key Laboratory of Urban Environment and Health, Fujian Key Laboratory of 
      Watershed Ecology Institute of Urban Environment, Chinese Academy of Sciences, 
      Xiamen, 361021, China; Ningbo Urban Environment Observatory and Monitoring 
      Station, Chinese Academy of Sciences, Ningbo, 315830, China.
LA  - eng
PT  - Journal Article
DEP - 20200607
PL  - England
TA  - Environ Pollut
JT  - Environmental pollution (Barking, Essex : 1987)
JID - 8804476
SB  - IM
OTO - NOTNLM
OT  - Bioaccumulation
OT  - Cancer risk
OT  - Long range atmospheric transport
OT  - Persistent organic pollutants
OT  - Remote alpine lakes
OT  - Trout fish
COIS- Declaration of competing interest The authors declare no conflict of interest.
EDAT- 2020/09/17 06:00
MHDA- 2020/09/17 06:00
CRDT- 2020/09/16 05:31
PHST- 2019/10/30 00:00 [received]
PHST- 2020/05/13 00:00 [revised]
PHST- 2020/06/02 00:00 [accepted]
PHST- 2020/09/16 05:31 [entrez]
PHST- 2020/09/17 06:00 [pubmed]
PHST- 2020/09/17 06:00 [medline]
AID - S0269-7491(19)36385-7 [pii]
AID - 10.1016/j.envpol.2020.114952 [doi]
PST - aheadofprint
SO  - Environ Pollut. 2020 Jun 7:114952. doi: 10.1016/j.envpol.2020.114952.