Exploring the impact of chemical composition on aerosol light extinction during winter in a heavily polluted urban area of China

doi:10.1016/j.jenvman.2019.06.100

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 粉尘与环境研究室

	Exploring the impact of chemical composition on aerosol light extinction during winter in a heavily polluted urban area of China
	Zhou, Yaqing 1,6,7; Wang, Qiyuan 1,5,6,7; Zhang, Xu 3; Wang, Yichen 2; Liu, Suixin 1,5,7; Wang, Meng 1,6,7; Tian, Jie 1,5,7; Zhu, Chongshu 1,5,7; Huang, Rujin 1,5,7; Zhang, Qian 4
刊名	JOURNAL OF ENVIRONMENTAL MANAGEMENT
	2019-10-01
卷号	247 页码:766-775
关键词	PM1 Aerosol species Pollution formation mechanisms Optical properties
ISSN号	0301-4797
DOI	10.1016/j.jenvman.2019.06.100
通讯作者	Wang, Qiyuan(wangqy@ieecas.cn) ; Cao, Junji(cao@loess.llqg.ac.cn)
英文摘要	An intensive measurement campaign was conducted in Xi'an, China from December 2012-January 2013 to investigate the chemical composition, formation, and optical properties of PM1. The PM1 mass concentration (average = 138.8 +/- 83.2 mu g m(-3)) accounted for similar to 50% of the PM2.5 mass. Organic aerosols (OA) and secondary inorganic aerosols (SIA) were the most abundant PM1 components, contributing 53.0% and 35.0% to the mass, respectively. Both primary emissions and aqueous-phase oxidation of secondary aerosols played roles in the pollution episodes. The average light scattering and absorption coefficients during the campaign were 805 +/- 581 Mm(-1) and 123 +/- 96 Mm(-1), respectively. Both the mass scattering and mass absorption efficiencies for PM1 were higher than that for PM2.5.1, indicating stronger ability of light extinction for the smaller particles at visible wavelengths compared with the larger ones. The contributions of aerosol species to light extinction coefficients under two visibility conditions were estimated based on multiple linear regression models, and the OA was found to be the largest contributor to light extinction in both cases. A larger contribution of SIA to light extinction for visibility < 5 km demonstrated its greater impacts on visibility during heavy pollution conditions. These findings provide insights into the importance of submicron particles for pollution and visibility degradation in northwestern China.
资助项目	National Natural Science Foundation of China[21661132005] ; Key Research and Development Program of Shaanxi Province[2018ZDCXL-SF-30-5] ; National Key Research and Development Program - Ministry of Science & Technology of China[2017YFC0212200] ; Youth Innovation Promotion Association, Chinese Academy of Sciences[2019402]
WOS关键词	BLACK CARBON AEROSOL ; OPTICAL-PROPERTIES ; SOURCE APPORTIONMENT ; ORGANIC AEROSOLS ; FINE PARTICLES ; BOUNDARY-LAYER ; AIR-POLLUTION ; BROWN CARBON ; MIXING STATE ; HAZE EVENTS
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
WOS记录号	WOS:000483635000077
资助机构	National Natural Science Foundation of China ; Key Research and Development Program of Shaanxi Province ; National Key Research and Development Program - Ministry of Science & Technology of China ; Youth Innovation Promotion Association, Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/13398]
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	Wang, Qiyuan; Cao, Junji
作者单位	1.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Inst Earth Environm, Xian 710061, Shaanxi, Peoples R China 2.Shenzhen Univ, Coll Management, Shenzhen 518060, Peoples R China 3.Xian Environm Monitor Stn, Xian 710100, Shaanxi, Peoples R China 4.Xian Univ Architecture & Technol, Sch Environm & Municipal Engn, Xian 710055, Shaanxi, Peoples R China 5.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Shaanxi, Peoples R China 6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 7.Chinese Acad Sci, Key Lab Aerosol Chem & Phys, Inst Earth Environm, Xian 710061, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Yaqing,Wang, Qiyuan,Zhang, Xu,et al. Exploring the impact of chemical composition on aerosol light extinction during winter in a heavily polluted urban area of China[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2019,247:766-775.
APA	Zhou, Yaqing.,Wang, Qiyuan.,Zhang, Xu.,Wang, Yichen.,Liu, Suixin.,...&Cao, Junji.(2019).Exploring the impact of chemical composition on aerosol light extinction during winter in a heavily polluted urban area of China.JOURNAL OF ENVIRONMENTAL MANAGEMENT,247,766-775.
MLA	Zhou, Yaqing,et al."Exploring the impact of chemical composition on aerosol light extinction during winter in a heavily polluted urban area of China".JOURNAL OF ENVIRONMENTAL MANAGEMENT 247(2019):766-775.