PMID- 33297267
OWN - NLM
STAT- MEDLINE
DCOM- 20201221
LR  - 20201221
IS  - 1879-1298 (Electronic)
IS  - 0045-6535 (Linking)
VI  - 263
DP  - 2021 Jan
TI  - Short-chain chlorinated paraffins in soils indicate landfills as local sources in 
      the Tibetan Plateau.
PG  - 128341
LID - S0045-6535(20)32536-4 [pii]
LID - 10.1016/j.chemosphere.2020.128341 [doi]
AB  - Background contamination levels of contemporary persistent organic pollutants 
      (POPs) may be elevated due to local discharges, and hence it is of high 
      importance to assess and monitor them in alpine and Polar Regions. This study 
      investigated the role of waste disposal in the Tibetan plateau as the local 
      source of short-chain chlorinated paraffins (SCCPs). SCCPs were determined in 
      soils from the urban landfill and rural dumpsites, with a concentration range of 
      56.8-1348 ng/g dw. The gradient descent of SCCP levels from Lhasa landfill to the 
      surrounding soils with increasing distances suggested a significant SCCP release 
      from waste disposal. The transport pattern was well fitted by the Boltzmann 
      equation after normalization in terms of soil organic carbon contents. Compared 
      to the landfill cells closed in early years, the recently closed cells contained 
      higher concentrations but lower proportions of the short-chain congener groups, 
      likely reflecting the SCCP use history in Tibet. In open-burning dumpsites, 
      higher SCCP levels and dominance of lighter congener groups indicates that such 
      crude waste treatment process might cause an extra release of volatile SCCPs. 
      This study elucidates local SCCP inputs to the background environment, and 
      demonstrates that both urbanization and badly-managed landfill have been 
      contributing to the presence of contemporary POPs in the Tibetan Plateau.
CI  - Copyright (c) 2020 Elsevier Ltd. All rights reserved.
FAU - Li, Jun
AU  - Li J
AD  - State Key Laboratory of Biogeology and Environmental Geology, China University of 
      Geosciences, Beijing, 100083, China; School of the Earth Sciences and Resources, 
      China University of Geosciences, Beijing, 100083, China.
FAU - Xu, Liang
AU  - Xu L
AD  - School of the Earth Sciences and Resources, China University of Geosciences, 
      Beijing, 100083, China.
FAU - Zhou, Yihui
AU  - Zhou Y
AD  - State Key Laboratory of Pollution Control and Resource Reuse, College of 
      Environmental Science and Engineering, Tongji University, Shanghai, 200092, 
      China.
FAU - Yin, Ge
AU  - Yin G
AD  - Shimadzu (China) Co., LTD, Shanghai, 200233, China.
FAU - Wu, Yan
AU  - Wu Y
AD  - O'Neill School of Public and Environmental Affairs, Indiana University, 
      Bloomington, IN, 47405, United States.
FAU - Yuan, Guo-Li
AU  - Yuan GL
AD  - State Key Laboratory of Biogeology and Environmental Geology, China University of 
      Geosciences, Beijing, 100083, China; School of the Earth Sciences and Resources, 
      China University of Geosciences, Beijing, 100083, China. Electronic address: 
      yuangl@cugb.edu.cn.
FAU - Du, Xinyu
AU  - Du X
AD  - State Key Laboratory of Pollution Control and Resource Reuse, College of 
      Environmental Science and Engineering, Tongji University, Shanghai, 200092, 
      China. Electronic address: mark8818@aliyun.com.
LA  - eng
PT  - Journal Article
DEP - 20200915
PL  - England
TA  - Chemosphere
JT  - Chemosphere
JID - 0320657
RN  - 0 (Hydrocarbons, Chlorinated)
RN  - 0 (Soil)
RN  - 7440-44-0 (Carbon)
RN  - 8002-74-2 (Paraffin)
SB  - IM
MH  - Carbon
MH  - China
MH  - Environmental Monitoring
MH  - *Hydrocarbons, Chlorinated/analysis
MH  - *Paraffin/analysis
MH  - Soil
MH  - Tibet
MH  - Waste Disposal Facilities
OTO - NOTNLM
OT  - Local source
OT  - Short-chain chlorinated paraffins
OT  - Tibetan plateau
OT  - Urban landfill
OT  - Waste age
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- 2020/12/11 06:00
MHDA- 2020/12/22 06:00
CRDT- 2020/12/10 01:02
PHST- 2020/06/27 00:00 [received]
PHST- 2020/09/08 00:00 [revised]
PHST- 2020/09/11 00:00 [accepted]
PHST- 2020/12/10 01:02 [entrez]
PHST- 2020/12/11 06:00 [pubmed]
PHST- 2020/12/22 06:00 [medline]
AID - S0045-6535(20)32536-4 [pii]
AID - 10.1016/j.chemosphere.2020.128341 [doi]
PST - ppublish
SO  - Chemosphere. 2021 Jan;263:128341. doi: 10.1016/j.chemosphere.2020.128341. Epub 
      2020 Sep 15.