Origin and transformation of ambient volatile organic compounds during a dust-to-haze episode in northwest China

doi:10.5194/acp-20-5425-2020

IEECAS OpenIR > 粉尘与环境研究室

	Origin and transformation of ambient volatile organic compounds during a dust-to-haze episode in northwest China
	Xue, Yonggang 1,2,3,4; Huang, Yu 1,2,3,4; Ho, Steven Sai Hang 1,2,5; Chen, Long 1,2,3,4; Wang, Liqin 1,2,3,4; Lee, Shuncheng 6; Cao, Junji 1,2,3,4
通讯作者	Huang, Yu(huangyu@ieecas.cn) ; Cao, Junji(cao@loess.llqg.ac.cn)
	2020-05-08
发表期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN	1680-7316
卷号	20 期号:9 页码:5425-5436
摘要	The high contribution of secondary organic aerosol to the loading of fine particle pollution in China highlights the roles of volatile organic compound (VOC) oxidation. In this respect, particulate active metallic oxides in dust, like TiO2 and Fe ions, were proposed to influence the photochemical reactions of ambient VOCs. A case study was conducted at an urban site in Xi'an, northwest China, to investigate the origin and transformation of VOCs during a windblown dust-to-haze pollution episode, and the assumption that dust would enhance the oxidation of VOCs was verified. Local vehicle exhaust (25 %) and biomass burning (18 %) were found to be the two largest contributors to ambient VOCs. In the dust pollution period, a sharp decrease in the loading of VOCs and the aging of their components were observed. Simultaneously, the secondary oxygenated VOC fraction (i.e., methylglyoxal) increased. Source strength, physical dispersion, and regional transport were eliminated as major factors for the variation of ambient VOCs. In another aspect, about a 2- to 3-fold increase in the loading of iron (Fe) and titanium (Ti) was found in the airborne particles, together with a fast decrease in trans-/cis-2-butene ratios, which demonstrated that dust can accelerate the oxidation of ambient VOCs and the formation of secondary organic aerosol (SOA) precursors.
DOI	10.5194/acp-20-5425-2020
关键词[WOS]	PM2.5 CHEMICAL-COMPOSITION ; PEARL RIVER-DELTA ; COMPOUNDS VOCS ; SOURCE APPORTIONMENT ; CARBONACEOUS AEROSOLS ; ROADSIDE ENVIRONMENT ; DIURNAL-VARIATIONS ; ELEMENTAL CARBON ; TIBETAN PLATEAU ; AIR-POLLUTION
收录类别	SCI ; SCI
语种	英语
资助项目	National Key Research and Development Program of China[2017YFC0212200] ; National Key Research and Development Program of China[2016YFA0203000] ; National Natural Science Foundation of China[41701565] ; National Natural Science Foundation of China[21661132005] ; National Natural Science Foundation of China[41573138] ; Strategic Priority Research Program of the Chinese Academy of Sciences, China[XDA23010]
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
项目资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences, China
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000531868500002
出版者	COPERNICUS GESELLSCHAFT MBH
引用统计	被引频次：15[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/13980
专题	粉尘与环境研究室第四纪科学与全球变化卓越创新中心
通讯作者	Huang, Yu; Cao, Junji
作者单位	1.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Peoples R China 2.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol SKLLQG, Xian 710061, Peoples R China 3.Chinese Acad Sci, Inst Earth Environm, Shaanxi Key Lab Atmospher & Haze Fog Pollut Preve, Xian 710061, Peoples R China 4.CAS Ctr Excellence Quaternary Sci & Global Chang, Xian 710061, Peoples R China 5.Desert Res Inst, Div Atmospher Sci, Reno, NV USA 6.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hung Hom, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Xue, Yonggang,Huang, Yu,Ho, Steven Sai Hang,et al. Origin and transformation of ambient volatile organic compounds during a dust-to-haze episode in northwest China[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2020,20(9):5425-5436.
APA	Xue, Yonggang.,Huang, Yu.,Ho, Steven Sai Hang.,Chen, Long.,Wang, Liqin.,...&Cao, Junji.(2020).Origin and transformation of ambient volatile organic compounds during a dust-to-haze episode in northwest China.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(9),5425-5436.
MLA	Xue, Yonggang,et al."Origin and transformation of ambient volatile organic compounds during a dust-to-haze episode in northwest China".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.9(2020):5425-5436.