气候变化领域集成服务门户(CCPortal): Century-long record of polycyclic aromatic hydrocarbons from tree rings in the southeastern Tibetan Plateau

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DOI	10.1016/j.jhazmat.2021.125152
	Century-long record of polycyclic aromatic hydrocarbons from tree rings in the southeastern Tibetan Plateau
	Wang, Xiaoyan; Wang, Chuanfei; Gong, Ping; Wang, Xiaoping; Zhu, Haifeng; Gao, Shaopeng
通讯作者	Wang, CF (通讯作者)
发表日期	2021
ISSN	0304-3894
EISSN	1873-3336
卷号	412
英文摘要	Limited studies have been carried out on the historical variations of atmospheric polycyclic aromatic hydrocarbons (PAHs), especially in remote regions of the world. In this study, century-long record of PAHs (1916?2018) were reconstructed from tree rings in the remote southeastern Tibetan Plateau (TP). The total concentrations of 15 PAHs varied from 27.5 to 6.05 ? 102 ng/g dry weight (dw), with a mean value of 1.40 ? 102 ng/g dw. Higher levels of PAHs were observed during World War II and the Peaceful Liberation of Tibet, and increasing trends were observed starting from rapid industrialization in India. Both the isomer ratios and the positive matrix factorization model results indicated biomass and coal combustion were the dominant sources of PAHs. The carcinogenic risk of PAHs to local residents was assessed, which might have been negligible in most past periods and lower than in other regions of the world. Nevertheless, since the beginning of the 21st century, the cancer risk has been increasing year by year, indicating more actions are needed to reduce emissions of PAHs. This study provides an idea for reconstructing the pollution history of PAHs at the global scale.
关键词	PERSISTENT ORGANIC POLLUTANTS LUNG-CANCER RISK SPATIAL-DISTRIBUTION TERM TRENDS POLYCHLORINATED-BIPHENYLS SEASONAL-VARIATIONS COAL COMBUSTION HEALTH-RISK PAHS EXPOSURE
英文关键词	PAHs; Tree rings; Temporal trend; Atmospheric concentration; Cancer risk
语种	英语
WOS研究方向	Engineering ; Environmental Sciences & Ecology
WOS类目	Engineering, Environmental ; Environmental Sciences
WOS记录号	WOS:000649730000006
来源期刊	JOURNAL OF HAZARDOUS MATERIALS
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/260179
推荐引用方式 GB/T 7714	Wang, Xiaoyan,Wang, Chuanfei,Gong, Ping,et al. Century-long record of polycyclic aromatic hydrocarbons from tree rings in the southeastern Tibetan Plateau[J]. 中国科学院青藏高原研究所,2021,412.
APA	Wang, Xiaoyan,Wang, Chuanfei,Gong, Ping,Wang, Xiaoping,Zhu, Haifeng,&Gao, Shaopeng.(2021).Century-long record of polycyclic aromatic hydrocarbons from tree rings in the southeastern Tibetan Plateau.JOURNAL OF HAZARDOUS MATERIALS,412.
MLA	Wang, Xiaoyan,et al."Century-long record of polycyclic aromatic hydrocarbons from tree rings in the southeastern Tibetan Plateau".JOURNAL OF HAZARDOUS MATERIALS 412(2021).