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KMID : 1024520170260091045
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Journal of the Environmental Sciences
2017 Volume.26 No. 9 p.1045 ~ p.1055
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Spatio-Temporal Characteristics of PM2.5 in Gyeongnam Province during 2015-2016
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Shon Zang-Ho
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Abstract
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Characterization of spatio-temporal variations in PM2.5 in Gyeongnam (GN) province during 2015-2016 was investigated to assess the air quality in this area in terms of fine particles. Yearly mean concentrations of PM2.5 ranged from 19.1 to 29.5 μgm-3. High concentrations of PM2.5 were observed in spring (21.2-30.3 μgm-3) and winter (20.2-30.3 μgm-3). Low concentrations of PM2.5 were generally observed in fall (16.2-23.2 μgm-3). PM2.5 concentration was highest in the morning (10 AM). The fractions of PM2.5 in PM10 were 0.51-0.62 and two were significantly correlated (r=0.779-0.830), suggesting common sources (fossil fuel combustion, mobile sources, etc). CO was significantly correlated with PM2.5 in highly urbanized areas such as the city of Changwon (CW, r=0.711), compared to other air pollutants (SO2, NO2, and O3), suggesting dominance of industrial combustion sources.
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KEYWORD
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PM2.5, PM10, PM2.5/PM10 ratio, Gyeongnam
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