PMID- 25377619
OWN - NLM
STAT- MEDLINE
DCOM- 20150821
LR  - 20181202
IS  - 1520-5851 (Electronic)
IS  - 0013-936X (Linking)
VI  - 48
IP  - 24
DP  - 2014 Dec 16
TI  - Forest filter effect versus cold trapping effect on the altitudinal distribution 
      of PCBs: a case study of Mt. Gongga, eastern Tibetan Plateau.
PG  - 14377-85
LID - 10.1021/es5041688 [doi]
AB  - Mountains are observed to preferentially accumulate persistent organic pollutants 
      (POPs) at higher altitude due to the cold condensation effect. Forest soils 
      characterized by high organic carbon are important for terrestrial storage of 
      POPs. To investigate the dominant factor controlling the altitudinal distribution 
      of POPs in mountainous areas, we measured concentrations of polychlorinated 
      biphenyls (PCBs) in different environmental matrices (soil, moss, and air) from 
      nine elevations on the eastern slope of Mt. Gongga, the highest mountain in 
      Sichuan Province on the Tibetan Plateau. The concentrations of 24 measured PCBs 
      ranged from 41 to 510 pg/g dry weight (dw) (mean: 260 pg/g dw) in the O-horizon 
      soil, 280 to 1200 pg/g dw (mean: 740 pg/g dw) in moss, and 33 to 60 pg/m(3) 
      (mean: 47 pg/m(3)) in air. Soil organic carbon was a key determinant explaining 
      75% of the variation in concentration along the altitudinal gradient. Across all 
      of the sampling sites, the average contribution of the forest filter effect (FFE) 
      was greater than that of the mountain cold trapping effect based on principal 
      components analysis and multiple linear regression. Our results deviate from the 
      thermodynamic theory involving cold condensation at high altitudes of mountain 
      areas and highlight the importance of the FFE.
FAU - Liu, Xin
AU  - Liu X
AD  - State Key Laboratory of Organic Geochemistry, Guangzhou Institute of 
      Geochemistry, Chinese Academy of Sciences , Guangzhou 510640, China.
FAU - Li, Jun
AU  - Li J
FAU - Zheng, Qian
AU  - Zheng Q
FAU - Bing, Haijian
AU  - Bing H
FAU - Zhang, Ruijie
AU  - Zhang R
FAU - Wang, Yan
AU  - Wang Y
FAU - Luo, Chunling
AU  - Luo C
FAU - Liu, Xiang
AU  - Liu X
FAU - Wu, Yanhong
AU  - Wu Y
FAU - Pan, Suhong
AU  - Pan S
FAU - Zhang, Gan
AU  - Zhang G
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20141124
PL  - United States
TA  - Environ Sci Technol
JT  - Environmental science & technology
JID - 0213155
RN  - 0 (Air Pollutants)
RN  - 0 (Soil Pollutants)
RN  - DFC2HB4I0K (Polychlorinated Biphenyls)
SB  - IM
MH  - Air Pollutants/*analysis
MH  - Altitude
MH  - Bryophyta/*chemistry
MH  - Cold Temperature
MH  - Environmental Monitoring
MH  - Forests
MH  - Polychlorinated Biphenyls/*analysis
MH  - Soil Pollutants/*analysis
MH  - Tibet
EDAT- 2014/11/08 06:00
MHDA- 2015/08/22 06:00
CRDT- 2014/11/08 06:00
PHST- 2014/11/08 06:00 [entrez]
PHST- 2014/11/08 06:00 [pubmed]
PHST- 2015/08/22 06:00 [medline]
AID - 10.1021/es5041688 [doi]
PST - ppublish
SO  - Environ Sci Technol. 2014 Dec 16;48(24):14377-85. doi: 10.1021/es5041688. Epub 
      2014 Nov 24.