干旱区生态环境知识资源中心(Arid): Heating events drive the seasonal patterns of volatile organic compounds in a typical semi-arid city

Arid

DOI	10.1016/j.scitotenv.2021.147781
	Heating events drive the seasonal patterns of volatile organic compounds in a typical semi-arid city
	Xie, Fei; Zhou, Xingjun; Wang, Haoji; Gao, Jimei; Hao, Feng; He, Jiang; Lu, Changwei
通讯作者	Lu, CW (corresponding author), Inner Mongolia Univ, Sch Ecol & Environm, Hohhot 010021, Peoples R China.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2021
卷号	788
英文摘要	The emission characteristics, source apportionment and chemical behavior of volatile organic compounds (VOCs) are important for strategy-making on ozone (O3) and fine particulate matter (PM2.5) control. Based on the continuous observation during four seasons, the seasonal characteristics, chemical reactivity and source apportionment of 116 VOCs species were studied in a typical semi-arid city with no relevant research. The results showed that the annual average concentrations of total volatile organic compounds (TVOCs) in Hohhot was 44.67 +/- 46.59 ppbv with the predominant of alkanes and oxygenated volatile organic compounds (OVOCs). The sharp increment of TVOCs were explained by the elevating OVOCs and alkanes in autumn, while alkanes and alkenes in winter. The levels of alkenes presented negative and positive correlations with solar radiation and PM10, respectively. The mixing ratios accounted for 30% (alkanes) and 23% (alkenes and aromatics) of the TVOCs, respectively; while their ozone formation potential (OFP) -15% and nearly 50% (even 75% in winter), respectively, indicating that the OFP of different VOCs species depends not only on their concentrations but more importantly on their chemical activity in atmosphere. According to the seasonal source apportionment, both the high levels of short-chain alkanes, alkenes and aromatics and the increasing coal sales volume suggested that the combustion sources were the predominant in heating seasons, while solvent uses was extracted as the most predominant during non-heating seasons. In non-heating seasons, the biogenic emission sources, ranking as the second contributor, were significantly higher than heating seasons. Isoprene was the most active biogenic VOCs species, bagging test results showed that deciduous trees were the predominant contributors for isoprene (-99%), while coniferous trees and shrub for monoterpenes (>95%). It will be helpful for understanding the characteristics of VOCs in Chinese national key development areas and informing policy to control semi-arid regional VOCs air pollution. (c) 2021 Elsevier B.V. All rights reserved.
英文关键词	Volatile organic compounds Seasonal patterns Chemical reactivity Source apportionment Heating events
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000662648800012
WOS关键词	POSITIVE MATRIX FACTORIZATION ; YANGTZE-RIVER DELTA ; SOURCE APPORTIONMENT ; COMPOUNDS VOCS ; HONG-KONG ; AROMATIC-HYDROCARBONS ; TEMPORAL VARIATIONS ; OZONE PRODUCTION ; MIXING RATIOS ; AIR-POLLUTION
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351687
作者单位	[Xie, Fei; Wang, Haoji; He, Jiang; Lu, Changwei] Inner Mongolia Univ, Sch Ecol & Environm, Hohhot 010021, Peoples R China; [Xie, Fei; Zhou, Xingjun; Gao, Jimei; Hao, Feng] Inner Mongolia Environm Monitoring Ctr, Hohhot 010011, Peoples R China; [He, Jiang; Lu, Changwei] Inner Mongolia Univ, Inst Environm Geol, Hohhot 010021, Peoples R China
推荐引用方式 GB/T 7714	Xie, Fei,Zhou, Xingjun,Wang, Haoji,et al. Heating events drive the seasonal patterns of volatile organic compounds in a typical semi-arid city[J],2021,788.
APA	Xie, Fei.,Zhou, Xingjun.,Wang, Haoji.,Gao, Jimei.,Hao, Feng.,...&Lu, Changwei.(2021).Heating events drive the seasonal patterns of volatile organic compounds in a typical semi-arid city.SCIENCE OF THE TOTAL ENVIRONMENT,788.
MLA	Xie, Fei,et al."Heating events drive the seasonal patterns of volatile organic compounds in a typical semi-arid city".SCIENCE OF THE TOTAL ENVIRONMENT 788(2021).