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Huan Jing Ke Xue

Title:		[Effect of VOCs on O(3) and SOA Formation Potential During the Combined Pollution Process in Guangzhou Panyu Atmospheric Composition Station]
Author(s):		Zou Y; Deng XJ; Li F; Yin CQ;
Address:		"Guangdong Provincial Key Laboratory of Regional Numerical Weather Prediction, Institute of Tropical and Marine Meteorology, China Meteorological Administration, Guangzhou 510080, China"
Journal Title:		Huan Jing Ke Xue
Year:		2017
Volume:		38
Issue:		6
Page Number:		2246 - 2255
DOI:		10.13227/j.hjkx.201605164
ISSN/ISBN:		0250-3301 (Print) 0250-3301 (Linking)
Abstract:		"An analysis was made by using historical observational data of Guangzhou Panyu Atmospheric Composition Station(GPACS). The results showed that typical haze processes accompanied with high ozone episodes happened during the period from September 2rd, 2011 to September 5th, 2011(P(1)) and the period from June 12th, 2012 to June 15th, 2012(P(2)) respectively. During the two combined pollution processes (P(1) and P(2)), daily visibility ranged from 5.78 km to 6.91 km and from 5.60 km to 9.25 km, and the maximum 8 h O(3)reached 92.14x10(-9) and 91.29x10(-9) respectively. Among the 55 detected volatile organic compounds(VOCs), alkenes and aromatics had the highest reactivity with the 41%, 39% proportions of equivalent propylene concentration and the proportions of 28%, 54% in the aspect of ozone formation potential during P(1). Alkenes and aromatics contributed 35% and 46% of equivalent propylene concentration, as well as 22% and 61% to ozone formation potential during P(2). In terms of SOA formation potential by FAC estimation, alkanes, alkenes and aromatics accounted for 13.2%, 21.4%, 65.4% during P(1) and 4.6%, 13.8%, 81.6% during P(2) respectively. Toluene, isoprene, ethylbenzene and m,p-Xylene had large contributions to the ozone and SOA formation. Factors including pollutants transported from the downtown area, continuous gentle wind, high temperature, low humidity and strong radiation gave rise to the occurrence of high ozone episodes in these two haze processes"
Keywords:		Guangzhou combined pollution process formation potential ozone (O3) secondary organic aerosol (SOA);
Notes:		"PubMed-not-MEDLINEZou, Yu Deng, Xue-Jiao Li, Fei Yin, Chang-Qin chi English Abstract China 2018/07/03 Huan Jing Ke Xue. 2017 Jun 8; 38(6):2246-2255. doi: 10.13227/j.hjkx.201605164"