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초록

Recently, the concentration of most air pollutants such as SO2, CO, PM10, PM2.5,
and NOx has been steadily improved, but the O3 concentration has been increasing. O3
precursors affecting O3 production include nitrogen oxides(NOx=NO+NO2) and volatile
organic compounds(VOCs), which are known to produce O3 by photochemical reactions
with ultraviolet light. This study was conducted to understand the roles of NOx and
VOCs including anthropogenic VOCs(AVOCs) and biogenic VOCs(BVOCs) on the O3
concentration. From January to December 2019, analysis was performed using O3, NOx,
55 species of VOCs, and meteorological factor measurement data from Jongno and
Bukhansan air quality monitoring stations. The distribution of O3, NOx, and VOCs
concentrations were high in urban areas and the concentration of O3 was high in green
areas. VOCs were high in the order of alkane, aromatic, and alkene at both stations.
The top major compounds of VOCs were ethane, ethylene, propane, n-butane, and
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