Species profiles and normalized reactivity of volatile organic compounds   from gasoline evaporation in China

doi:10.1016/j.atmosenv.2013.06.029

CORC > 北京大学 > 环境科学与工程学院

	Species profiles and normalized reactivity of volatile organic compounds from gasoline evaporation in China
	Zhang, Yanli ; Wang, Xinming ; Zhang, Zhou ; Lu, Sujun ; Shao, Min ; Lee, Frank S. C. ; Yu, Jianzhen
刊名	大气环境
	2013
关键词	Gasoline evaporation Volatile organic compounds (VOCs) Source profiles Ozone formation potential (OFP) Normalized reactivity Vapor recovery units (VRU) PEARL RIVER-DELTA AIR-POLLUTION SOURCES SOURCE APPORTIONMENT COMPOUNDS VOCS NONMETHANE HYDROCARBONS AROMATIC-HYDROCARBONS EMISSION INVENTORIES FIRE EMISSIONS MIXING RATIOS PRD REGION
DOI	10.1016/j.atmosenv.2013.06.029
英文摘要	In China, fast increase in passenger cars and gasoline consumption with yet quite limited vapor recovery during gasoline distribution has procured growing concern about gasoline evaporation as an important emission source of volatile organic compounds (VOCs), particularly in megacities hard-hit by air quality problems. This study presents VOC species profiles related to major pathways of gasoline evaporative loss in China, including headspace displacement, refueling operations and spillage/leakage. Apart from liquid gasoline and headspace vapors, gasoline vapors emitted when refueling cars in service stations or tank trucks in oil marketing depots were also sampled in situ with vapor recovery units (VRUs) turning on/off. Alkanes, alkenes and aromatic hydrocarbons accounted for 55-66, 21-35 and 4-8% in refueling vapors, 59-72, 18-28 and 4-10% in headspace vapors and 33-51, 8-15 and 38-48% in liquid gasoline samples, respectively. During refueling with VRUs turning on, total VOCs in vapors were less than one fifth of that with VRUs turning off, and aromatic hydrocarbons had higher weight percentages of about 8% in contrast with that of about 4% during refueling with VRUs turning off. Refueling vapors, especially for that with VRUs turning off, showed a larger fraction of light hydrocarbons including C-3-O-5 light alkenes when compared to headspace vapors, probably due to splashing and disturbance during filling operation. In refueling or headspace vapors the ratios of i-pentane/benzene, i-pentane/toluene, and MTBE (methyl tert-butyl ether)/benzene ranged 8.7-57, 2.7-4.8, and 1.9-6.6, respectively; and they are distinctively much higher than those previously reported in vehicle exhausts. Calculated normalized reactivity or ozone formation potential of the gasoline vapors in China ranged 3.3-4.4 g O-3 g(-1) VOC, about twice that of gasoline headspace vapors reported in USA as a result of larger fractions of alkenes in China's gasoline vapors. The results suggested that reducing VOC emission from gasoline distribution sector would particularly benefit ground-level ozone control in China. (C) 2013 Elsevier Ltd. All rights reserved.; Environmental Sciences; Meteorology & Atmospheric Sciences; SCI(E); EI; 5; ARTICLE; 110-118; 79
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/219684]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Zhang, Yanli,Wang, Xinming,Zhang, Zhou,et al. Species profiles and normalized reactivity of volatile organic compounds from gasoline evaporation in China[J]. 大气环境,2013.
APA	Zhang, Yanli.,Wang, Xinming.,Zhang, Zhou.,Lu, Sujun.,Shao, Min.,...&Yu, Jianzhen.(2013).Species profiles and normalized reactivity of volatile organic compounds from gasoline evaporation in China.大气环境.
MLA	Zhang, Yanli,et al."Species profiles and normalized reactivity of volatile organic compounds from gasoline evaporation in China".大气环境 (2013).