From April to October 2018, the authors observed the atmospheric VOCs in Xinxiang and analyzed the concentration level, ozone formation potentials and sources of the VOCs. The results showed that the average concentration of 70 kinds of atmospheric VOCs was 117.23 μg/m 3 ( range from 27.25 ~289.18 μg/m 3 ) in Xinxiang. The VOCs were mainly composed of carbonyl compounds and alkanes (specifically carbonyl compounds, alkanes, aromatic hydrocarbons, olefins and alkynes in descending order). These VOCs mainly came from vehicle emission and fuel combustion, solvent evaporation sources (37.609% and 16.791% respectively). The ozone formation potential (OFP) of all kinds of VOCs in the atmosphere were ranked in descending order as carbonyl compounds, aromatic hydrocarbons, olefins and alkynes, alkanes.
Journal of Environmental Management College of China
ozone formation potential