国家干线公路移动源VOCs排放及臭氧生成潜势研究

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Abstract

According to the VOCs calculating method, a vehicle emission inventory of VOCs had been established based on a daily average monitoring dataset of 4346 traffic stations in national trunk highways (NTHs). Ozone formation potential (OFP) of VOCs was estimated by the maximum incremental reactivity (MIR). A dynamic segmentation technology was used to the NTHs and then the intensity of OFP was calculated by kernel density analysis method to analyze its spatial distribution. The results show that annual emission of VOCs of passenger car was the largest one with its percentage up to 70.50%. Guangdong Province account for the most in all provinces and was 10.7%. G15 accounted for 5.4% and was the largest among all the NTHs. Olefins and aromatic hydrocarbons were the main contributors of OFP, the top ten key organic pollutants account for 67.29%. The intensity of daily average OFP of both freight and passenger vehicles varied largely in different highways and were affected by the traffic flow. Beijing and Tianjin showed a cluster concentration and took a belt distribution in Shijiazhuang. A meniscus distribution was along Jinan, Zibo, Weifang and Qingdao. Nanjing-Suzhou-Shanghai-and Hangzhou also showed a cluster distribution and converged in Shanghai. Shenzhen was a centre around Bay area of Yue-Gang-Ao. Shenyang, Zhengzhou, Xi'an, Wuhan, Chongqing and other hub cities showed a secondary intensity agglomerations.

Key words： national trunk highways mobile sources volatile organic compounds (VOCs) ozone formation potential (OFP) spatial distribution

Received: 22 March 2019

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	WEI Bing
	LI Hai-ping
	DU Jia-qi
	LIANG Zi-hao
	WANG Na-ping

Cite this article:

WEI Bing,LI Hai-ping,DU Jia-qi等. Emission and ozone formation potential of VOCs from mobile sources of national trunk highway[J]. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(10): 4043-4053.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2019/V39/I10/4043

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