气候变化领域集成服务门户(CCPortal): Sources and spatio-temporal distribution of aerosol polycyclic aromatic hydrocarbons throughout the Tibetan Plateau

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DOI	10.1016/j.envpol.2020.114144
	Sources and spatio-temporal distribution of aerosol polycyclic aromatic hydrocarbons throughout the Tibetan Plateau
	Zheng, Huijun; Kang, Shichang; Chen, Pengfei; Li, Quanlian; Tripathee, Lekhendra; Maharjan, Linda; Guo, Junming; Zhang, Qianggong; Santos, Ewerton
通讯作者	Kang, SC (通讯作者)
发表日期	2020
ISSN	0269-7491
EISSN	1873-6424
卷号	261
英文摘要	With the recent rapid development of urbanization, atmospheric pollutants such as polycyclic aromatic hydrocarbons (PAHs) have attracted wide attention, particularly in remote regions. The Tibetan Plateau (TP), known as the third pole is adjacent to areas with heavy atmospheric pollution, such as South and East Asia. However, the spatial distribution and sources of PAHs on the TP remain unclear. Thus, we investigated the sources and spatio-temporal distributions of PAHs on the TP by combining aerosol sample data from six sites, including Ngari (NG), Laohugou (LHG), Beiluhe (BLH), Nam Co (NMC), Everest (EV), and Yulong (YL), in 2014 and 2016. The average concentrations of 15 PAHs at the six sites ranged from 3.4 to 15.2 ng m(-3), with a decreasing trend from the marginal to inner areas of the plateau. The highest concentration was that in YL in the southeastern part of the TP, with an average of 15.2 ng m(-3). The PAH concentrations in NG, NMC, and YL were higher in autumn and winter and lower in summer. High molecular weight PAHs usually exists in the particulate phase whereas tricyclic PAHs can change from particulate to gaseous phase, therefore it can indicate long-range transport. Tricyclic PAHs were the dominant PAHs on the TP (44%-58%), indicating long-range atmospheric transport as the major source of PAHs. Principal component analysis (PCA) and diagnostic ratio analysis showed that biomass and coal combustion were the major sources of PAHs in inland areas of the TP; however, marginal plateau areas were affected by fossil fuel emissions. Compared with levels in Beijing and other urban sites, the toxic equivalent quantity (TEQ) was low (0.36-1.06 ng m(-3)), suggesting a low risk to human and ecosystem health. (C) 2020 Elsevier Ltd. All rights reserved.
关键词	CANCER RISK-ASSESSMENT LONG-TERM TRENDS SPATIAL-DISTRIBUTION ATMOSPHERIC AEROSOLS SOURCE APPORTIONMENT NORTH PACIFIC CHEMICAL CHARACTERISTICS SOURCE IDENTIFICATION BROWN CLOUDS PAH SOURCE
英文关键词	Polycyclic aromatic hydrocarbons; Source; Toxic equivalent quantity; Tibetan plateau
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:000531106500030
来源期刊	ENVIRONMENTAL POLLUTION
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259891
推荐引用方式 GB/T 7714	Zheng, Huijun,Kang, Shichang,Chen, Pengfei,et al. Sources and spatio-temporal distribution of aerosol polycyclic aromatic hydrocarbons throughout the Tibetan Plateau[J]. 中国科学院青藏高原研究所,2020,261.
APA	Zheng, Huijun.,Kang, Shichang.,Chen, Pengfei.,Li, Quanlian.,Tripathee, Lekhendra.,...&Santos, Ewerton.(2020).Sources and spatio-temporal distribution of aerosol polycyclic aromatic hydrocarbons throughout the Tibetan Plateau.ENVIRONMENTAL POLLUTION,261.
MLA	Zheng, Huijun,et al."Sources and spatio-temporal distribution of aerosol polycyclic aromatic hydrocarbons throughout the Tibetan Plateau".ENVIRONMENTAL POLLUTION 261(2020).