The Characteristics of PM 2.5 and Acidic Air Pollutants in the Vicinity of Industrial Complexes in Gwangyang

The cyclone/annular denuder system/filter pack sampling system (ADS) was used to collect data set of the acidic air pollutants in the vicinity of industrial complexes in Gwangyang. The data set was collected during sixty different days with 24 hour sampling period from January 8, 2008 through November 12, 2008. The annual mean concentrations of , , and in the gas phase were 1.12, 1.40, 10.2 and 1.28 , respectively. The annual mean concentrations of (), , , and in the particulate phase were 29.2, 8.25, 3.30 and 3.42, respectively. and exhibited higher concentrations during the summer, while , , and were higher during the winter. The highest level of was, unlikely, observed in the summer and was not showed seasonal variation. , , and accounted for 49~57% of the mass. was the most abundant component, which constituted 23~40% of . High correlations were found among , , , and .