Characteristics and source apportionment of VOCs in Shijiazhuang high-tech industrial development zone in summer

doi:10.3969/j.issn.1000-1565.2021.06.009

Abstract

Abstract: Ambient volatile organic compounds(VOCs)samples were collected in Shijiazhuang high-tech industrial development zone during the summer of 2019. VOCs characteristics,the ozone formation potential(OFP)and source apportionment were analysed. The results showed that,the average concentration of VOCs in Shijiazhuang high-tech industrial development zone was 51.52×10^-9 during the observation period. The highest proportion was OVOCs,followed by alkanes,halogenated hydrocarbons,olefinic hydrocarbons and aromatic hydrocarbons. The highest species are OVOCs and light alkanes. The weekend effect on the VOCs concentrations shows that VOCs concentrations are generally higher in the weekdays than in the weekends at the sampling site,suggesting that human activities have important impacts on the VOCs emissions in Shijiazhuang. OVOCs contribute largest OFP,which accounting for 58%. The highest species of OFP was formaldehyde. Finally,five potential sources of VOCs were quantified by positive matrix factorization(PMF)model,including traffic emissions(24%),regional background source(24%),usage of solvents(18%),solvent usage(17%),industrial emissions(9%)and plant emission(8%).

Key words: VOCs, source apportionment, PMF, Shijiazhuang

CLC Number:

X511

WANG Shujuan, LIU Xinjun, ZHOU Bing, WANG Peng, MA Xuelin, SU Wenkang. Characteristics and source apportionment of VOCs in Shijiazhuang high-tech industrial development zone in summer[J]. Journal of Hebei University(Natural Science Edition), 2021, 41(6): 690-697.

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