PMID- 31122015
OWN - NLM
STAT- MEDLINE
DCOM- 20190917
LR  - 20190917
IS  - 1520-5851 (Electronic)
IS  - 0013-936X (Linking)
VI  - 53
IP  - 12
DP  - 2019 Jun 18
TI  - Trans-Himalayan Transport of Organochlorine Compounds: Three-Year Observations 
      and Model-Based Flux Estimation.
PG  - 6773-6783
LID - 10.1021/acs.est.9b01223 [doi]
AB  - High mountains can trap semivolatile chemicals, such as persistent organic 
      pollutants (POPs), and hinder their dispersion. However, both deep convection and 
      mountain valleys can facilitate POPs' transport over mountains, which have not 
      been investigated before. In this study, a three-year sampling campaign along a 
      south-north altitudinal transect (100-5200m) across the central Himalayas, 
      coupled with a multicompartment contaminant fate model, was conducted for 
      describing the transport processes of POPs. The results show that POPs emitted in 
      the lowlands of the Himalayas can be transported to high altitudes and further to 
      the inner part of the Tibetan Plateau. Modeling suggests that more than 90% of 
      POPs are trapped along the way due to gaseous deposition to soil/foliage and 
      rainfall scavenging; while 2 x 10(-3) to 1 x 10(-1) Giga-grams/year of POPs are 
      transported across the Himalayas. The transport flux along valleys is 2-3 times 
      higher than that across the mountain ridge. However, due to the limited spatial 
      coverage of mountain valleys, the amount of POPs transported through valleys only 
      accounts for a small part of the total transport. This study shows that POPs can 
      overcome the blocking effect of the Himalayas, and high altitude transport across 
      the mountain ridge is the dominant transport pathway.
FAU - Gong, Ping
AU  - Gong P
AUID- ORCID: 0000-0002-8766-260X
AD  - Key Laboratory of Tibetan Environmental Changes and Land Surface Process , 
      Institute of Tibetan Plateau Research, Chinese Academy of Sciences (CAS) , 
      Beijing 100101 , China.
AD  - CAS Center for Excellence in Tibetan Plateau Earth Sciences , Beijing 100101 , 
      China.
FAU - Wang, Xiaoping
AU  - Wang X
AUID- ORCID: 0000-0001-7524-7540
AD  - Key Laboratory of Tibetan Environmental Changes and Land Surface Process , 
      Institute of Tibetan Plateau Research, Chinese Academy of Sciences (CAS) , 
      Beijing 100101 , China.
AD  - CAS Center for Excellence in Tibetan Plateau Earth Sciences , Beijing 100101 , 
      China.
AD  - University of Chinese Academy of Sciences , Beijing 100049 , China.
FAU - Pokhrel, Balram
AU  - Pokhrel B
AD  - Key Laboratory of Tibetan Environmental Changes and Land Surface Process , 
      Institute of Tibetan Plateau Research, Chinese Academy of Sciences (CAS) , 
      Beijing 100101 , China.
AD  - School of Science , Kathmandu University , Dhulikhel 45200 , Nepal.
FAU - Wang, Hailong
AU  - Wang H
AUID- ORCID: 0000-0002-1994-4402
AD  - Atmospheric Sciences and Global Change Division , Pacific Northwest National 
      Laboratory (PNNL) , Richland , Washington 99352 , United States.
FAU - Liu, Xiande
AU  - Liu X
AD  - Chinese Research Academy of Environmental Sciences , Beijing 100012 , China.
FAU - Liu, Xiaobo
AU  - Liu X
AD  - Key Laboratory of Tibetan Environmental Changes and Land Surface Process , 
      Institute of Tibetan Plateau Research, Chinese Academy of Sciences (CAS) , 
      Beijing 100101 , China.
AD  - Kathmandu Center for Research and Education, CAS-TU , Kathmandu 44618 , Nepal.
FAU - Wania, Frank
AU  - Wania F
AUID- ORCID: 0000-0003-3836-0901
AD  - Department of Physical and Environmental Sciences , University of Toronto 
      Scarborough , 1265 Military Trail , Toronto , ON M1C 1A4 , Canada.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20190605
PL  - United States
TA  - Environ Sci Technol
JT  - Environmental science & technology
JID - 0213155
RN  - 0 (Environmental Pollutants)
RN  - 0 (Hydrocarbons, Chlorinated)
RN  - 0 (Soil)
SB  - IM
MH  - Altitude
MH  - Environmental Monitoring
MH  - *Environmental Pollutants
MH  - *Hydrocarbons, Chlorinated
MH  - Soil
EDAT- 2019/05/28 06:00
MHDA- 2019/09/19 06:00
CRDT- 2019/05/25 06:00
PHST- 2019/05/28 06:00 [pubmed]
PHST- 2019/09/19 06:00 [medline]
PHST- 2019/05/25 06:00 [entrez]
AID - 10.1021/acs.est.9b01223 [doi]
PST - ppublish
SO  - Environ Sci Technol. 2019 Jun 18;53(12):6773-6783. doi: 10.1021/acs.est.9b01223. 
      Epub 2019 Jun 5.