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N-Alkanes and polycyclic aromatic hydrocarbons in total suspended particulates from the southeastern Tibetan Plateau: Concentrations, seasonal variations, and sources
Chen, Y (Chen, Yang)[ 1 ]; Cao, JJ (Cao, Junji)[ 1,2 ]; Zhao, J (Zhao, Jing)[ 2 ]; Xu, HM (Xu, Hongmei)[ 1 ]; Arimoto, R (Arimoto, Richard)[ 1 ]; Wang, GH (Wang, Gehui)[ 1 ]; Han, YM (Han, Yongming)[ 1 ]; Shen, ZX (Shen, Zhenxing)[ 2 ]; Li, GH (Li, Guohui)[ 1 ]
2014-02-01
Source PublicationScience of the Total Environment
Volume470Pages:9-18
Subtype期刊论文
Abstract

Sixty-two suspended particle (TSP) samples were collected from Lulang on the southeastern Tibetan Plateau from July 2008 and July 2009 to investigate the concentrations, seasonal variations, and sources of n-alkanes and polycyclic aromatic hydrocarbons (PAHs). Samples were analyzed using thermal-deposition gas chromatography mass spectrometry. The concentrations of particulate total n-alkanes ranged from 0.10 to 21.83ngm-3, with an annual mean of 1.25ngm-3; the PAHs ranged from 0.06 to 2.53, with a mean of 0.59 ngm-3. Up to 70% of PAHs were 5- and 6-ring compounds. The n-alkanes and PAHs both showed higher concentrations in winter and lower concentrations in summer. Analyses of diagnostic ratios indicate that 6.4% to 58.9% (mean 24.9%) of the n-alkanes were from plant waxes. Source characterization studies, i.e. diagnostic ratio and positive factor matrix analysis, suggest that the PAHs were from biomass burning as well as from fossil fuel combustion. Backward trajectory analysis suggests that the biomass mass burning pollutants could be from South Asia and western China via long distance transport. The study contributes to a more comprehensive understanding of the concentrations, seasonal variations, and sources of n-alkanes and PAHs in a remote background area in Tibetan Plateau.

KeywordN-alkanes Pahs Aerosol Tibet
DOI10.1016/j.scitotenv.2013.09.033
Indexed BySCI ; EI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9691
Collection粉尘与环境研究室
Corresponding AuthorCao, JJ (Cao, Junji)[ 1,2 ]
Affiliation1.Key Lab of Aerosol Science & Technology, SKLLQG, Institute of Earth Environment, Chinese Academy of Science, Xi'an, China;
2.Xi'an Jiaotong University, Xi'an, China
Recommended Citation
GB/T 7714
Chen, Y ,Cao, JJ ,Zhao, J ,et al. N-Alkanes and polycyclic aromatic hydrocarbons in total suspended particulates from the southeastern Tibetan Plateau: Concentrations, seasonal variations, and sources[J]. Science of the Total Environment,2014,470:9-18.
APA Chen, Y .,Cao, JJ .,Zhao, J .,Xu, HM .,Arimoto, R .,...&Li, GH .(2014).N-Alkanes and polycyclic aromatic hydrocarbons in total suspended particulates from the southeastern Tibetan Plateau: Concentrations, seasonal variations, and sources.Science of the Total Environment,470,9-18.
MLA Chen, Y ,et al."N-Alkanes and polycyclic aromatic hydrocarbons in total suspended particulates from the southeastern Tibetan Plateau: Concentrations, seasonal variations, and sources".Science of the Total Environment 470(2014):9-18.
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