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

文献类型：期刊论文

作者Xue, Yonggang3,4,5,6; Huang, Yu3,4,5,6; Ho, Steven Sai Hang2,4,5; Chen, Long3,4,5,6; Wang, Liqin3,4,5,6; Lee, Shuncheng1; Cao, Junji3,4,5,6
刊名ATMOSPHERIC CHEMISTRY AND PHYSICS
出版日期2020-05-08
卷号20期号:9页码:5425-5436
ISSN号1680-7316
DOI10.5194/acp-20-5425-2020
通讯作者Huang, Yu(huangyu@ieecas.cn) ; Cao, Junji(cao@loess.llqg.ac.cn)
英文摘要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.
WOS关键词PM2.5 CHEMICAL-COMPOSITION ; PEARL RIVER-DELTA ; COMPOUNDS VOCS ; SOURCE APPORTIONMENT ; CARBONACEOUS AEROSOLS ; ROADSIDE ENVIRONMENT ; DIURNAL-VARIATIONS ; ELEMENTAL CARBON ; TIBETAN PLATEAU ; AIR-POLLUTION
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
语种英语
WOS记录号WOS:000531868500002
出版者COPERNICUS GESELLSCHAFT MBH
资助机构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
源URL[http://ir.ieecas.cn/handle/361006/13979]  
专题地球环境研究所_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.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hung Hom, Hong Kong, Peoples R China
2.Desert Res Inst, Div Atmospher Sci, Reno, NV USA
3.CAS Ctr Excellence Quaternary Sci & Global Chang, Xian 710061, Peoples R China
4.Chinese Acad Sci, Inst Earth Environm, Key Lab Aerosol Chem & Phys, Xian 710061, Peoples R China
5.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol SKLLQG, Xian 710061, Peoples R China
6.Chinese Acad Sci, Inst Earth Environm, Shaanxi Key Lab Atmospher & Haze Fog Pollut Preve, Xian 710061, 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.

入库方式： OAI收割

来源：地球环境研究所

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