Short- and medium-chain chlorinated paraffins in multi-environmental matrices in the Tibetan Plateau environment of China: A regional scale study

Jing Wu; Wei Gao; Yong Liang; Jianjie Fu; Jianbo Shi; Yao Lu; Yawei Wang; Guibin Jiang

doi:10.1016/j.envint.2020.105767

Short- and medium-chain chlorinated paraffins in multi-environmental matrices in the Tibetan Plateau environment of China: A regional scale study

Environ Int. 2020 Jul:140:105767. doi: 10.1016/j.envint.2020.105767. Epub 2020 May 1.

Authors

Jing Wu¹, Wei Gao², Yong Liang³, Jianjie Fu⁴, Jianbo Shi⁵, Yao Lu¹, Yawei Wang⁶, Guibin Jiang⁴

Affiliations

¹ State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; China National Environmental Monitoring Centre, Beijing 100012, China.
² State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
³ Institute of Environment and Health, Jianghan University, Wuhan 430056, China.
⁴ State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
⁵ State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China; Institute of Environment and Health, Jianghan University, Wuhan 430056, China.
⁶ State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Institute of Environment and Health, Jianghan University, Wuhan 430056, China. Electronic address: ywwang@rcees.ac.cn.

PMID: 32361576
DOI: 10.1016/j.envint.2020.105767

Abstract

Research on the environmental fate and behavior of short- and medium-chain chlorinated paraffins (SCCPs and MCCPs, respectively), especially in high-altitude remote mountain areas, has rarely been conducted. In this study, the distribution and profiles of SCCPs and MCCPs in soils, barks, needles, lichens, and mosses in the Tibetan Plateau area were investigated during the period from 2010 to 2016. The total CP concentrations in soils, barks, needles, lichens, and mosses increased with increasing altitude from 1983 to 5147 m a.s.l. (above sea level), covering a range of 1843.5 km × 370.6 km. Generally, the mean SCCP levels were higher than mean MCCP levels in different environmental matrices. Moreover, as-obtained linear relationships between CP concentrations in different environmental matrices and altitudes (p < 0.05) indicated that the mountain cold-trapping could affect the presence and congener patterns of both SCCPs and MCCPs in the Tibetan Plateau environment. C_10-11 and C₁₄ congener groups were found to be the dominant groups in SCCPs and MCCPs in the environmental samples, respectively. Finally, the back-trajectory model was employed to reveal the differences of the potential sources in different regions of the Tibetan Plateau.

Keywords: Chlorinated paraffins; Environmental behavior; Long-range atmospheric transport; Mountain cold-trapping; Tibetan Plateau.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

China
Environmental Monitoring
Hydrocarbons, Chlorinated* / analysis
Paraffin* / analysis
Tibet

Substances

Hydrocarbons, Chlorinated
Paraffin