气候变化领域集成服务门户(CCPortal): Secondary organic aerosol formed by condensing anthropogenic vapours over China's megacities

CCPortal

DOI	10.1038/s41561-022-00922-5
	Secondary organic aerosol formed by condensing anthropogenic vapours over China's megacities
	Nie, Wei; Yan, Chao; Huang, Dan Dan; Wang, Zhe; Liu, Yuliang; Qiao, Xiaohui; Guo, Yishuo; Tian, Linhui; Zheng, Penggang; Xu, Zhengning; Li, Yuanyuan; Xu, Zheng; Qi, Ximeng; Sun, Peng; Wang, Jiaping; Zheng, Feixue; Li, Xiaoxiao; Yin, Rujing; Dallenbach, Kaspar R.; Bianchi, Federico; Petaja, Tuukka; Zhang, Yanjun; Wang, Mingyi; Schervish, Meredith; Wang, Sainan; Qiao, Liping; Wang, Qian; Zhou, Min; Wang, Hongli; Yu, Chuan; Yao, Dawen; Guo, Hai; Ye, Penglin; Lee, Shuncheng; Li, Yong Jie; Liu, Yongchun; Chi, Xuguang; Kerminen, Veli-Matti; Ehn, Mikael; Donahue, Neil M.; Wang, Tao; Huang, Cheng; Kulmala, Markku; Worsnop, Douglas; Jiang, Jingkun; Ding, Aijun
发表日期	2022
ISSN	1752-0894
EISSN	1752-0908
起始页码	255
结束页码	+
卷号	15 期号:4 页码:20
英文摘要	The formation of secondary organic aerosol in Chinese megacities is dominated by the condensation of anthropogenic organic vapours, according to measurements across three urbanized regions. Secondary organic aerosol contributes a significant fraction to aerosol mass and toxicity. Low-volatility organic vapours are critical intermediates connecting the oxidation of volatile organic compounds to secondary organic aerosol formation. However, the direct measurement of intermediate vapours poses a great challenge. Here we present coordinated measurements of oxygenated organic molecules in the three most urbanized regions of China and determine their likely precursors, enabling us to connect secondary organic aerosol formation to various volatile organic compounds. We show that the oxidation of anthropogenic volatile organic compounds dominates oxygenated organic molecule formation, with an approximately 40% contribution from aromatics and a 40% contribution from aliphatic hydrocarbons (predominantly alkanes), a previously under-accounted class of volatile organic compounds. The irreversible condensation of these anthropogenic oxygenated organic molecules increases significantly in highly polluted conditions, accounting for a major fraction of the production of secondary organic aerosol. We find that the distribution of oxygenated organic molecules and their formation pathways are largely the same across the urbanized regions. This suggests that uniform mitigation strategies could be effective in solving air pollution issues across these highly populated city clusters.
学科领域	Geosciences, Multidisciplinary
语种	英语
WOS研究方向	Geology
WOS记录号	WOS:000781177500003
来源期刊	NATURE GEOSCIENCE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/272627
作者单位	Nanjing University; Beijing University of Chemical Technology; University of Helsinki; Hong Kong University of Science & Technology; Tsinghua University; University of Macau; Hong Kong Polytechnic University; Swiss Federal Institutes of Technology Domain; Paul Scherrer Institute; Carnegie Mellon University; Chinese Academy of Sciences; Guangzhou Institute of Geochemistry, CAS; Aerodyne Research; Nanjing University
推荐引用方式 GB/T 7714	Nie, Wei,Yan, Chao,Huang, Dan Dan,et al. Secondary organic aerosol formed by condensing anthropogenic vapours over China's megacities[J],2022,15(4):20.
APA	Nie, Wei.,Yan, Chao.,Huang, Dan Dan.,Wang, Zhe.,Liu, Yuliang.,...&Ding, Aijun.(2022).Secondary organic aerosol formed by condensing anthropogenic vapours over China's megacities.NATURE GEOSCIENCE,15(4),20.
MLA	Nie, Wei,et al."Secondary organic aerosol formed by condensing anthropogenic vapours over China's megacities".NATURE GEOSCIENCE 15.4(2022):20.