| Online GC method was adopted to monitor 52 kinds of VOCs from the ambient air in a certain chemical industrial park for 90 consecutive days. Different mass concentration, volume concentration, OH consumption rate and maximum incremental activity (MIR) of different components of VOCs were used as the statistical method. Composition characteristics and atmospheric chemical reaction of VOCs were analyzed in the chemical industrial park. Results showed that the concentration of alkene in the chemical industrial park was higher that in the central area of the city, whose mass concentration and volume concentration percentage were 32.2% share and 48.3%. Alkene contributed 85.8% and 53.9% to the total VOCs reactivity and ozone formation potential respectively. The averageKOH of VOCs was 13.521012 cm3mol-1s-1in the chemical industry park, which was similar as that of o-xylene and higher than that of ethylene. Higher concentration of species in the alkene was ethylene and propylene. The reactivity of isoprene, ethylene, cis-2-butene, propylene and isobutylene were higher than other alkenes. Propylene, cis-2-butene, isoprene, 1-butene and trans-2-butene were the top five of ozone formation potential. |
