太原市夏季大气VOCs污染特征及臭氧生成潜势

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Abstract

In August 2018, air samples were collected in Taiyuan. The pollution characteristics of ambient volatile organic compounds (VOCs) were analyzed and the ozone formation potential (OFP) of VOCs was also calculated by the maximum incremental reactivity (MIR). The results showed that the VOCs concentration in summer ranged from 17.36μg/m³ to 89.60μg/m³. And the average proportions of alkanes, aromatics, alkenes, alkynes were 58.01%, 20.06%, 16.52%, 5.40%, respectively. The diurnal variations of VOCs concentrations showed obvious bimodal distribution in the morning and evening, and the influence of morning peaks was more significant. Alkanes, alkenes, aromatics and alkynes contributed 19.16%, 47.74%, 31.75% and 1.35% to the total OFP, respectively. C₃~C₅ alkenes have high activity, which greatly contribute to O₃ formation.

Key words： volatile organic compounds (VOCs) pollution characteristics ozone formation potential (OFP) Taiyuan

Received: 28 February 2019

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X511

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	Articles by authors
	SI Lei-ting
	WANG Hao
	LI Yang
	WEI Yong-jie
	YUAN Jin

Cite this article:

SI Lei-ting,WANG Hao,LI Yang等. Pollution characteristics and ozone formation potential of ambient VOCs in summer in Taiyuan[J]. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(9): 3655-3662.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2019/V39/I9/3655

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