Journal
JOURNAL OF KOREAN SOCIETY FOR ATMOSPHERIC ENVIRONMENT
Volume 31, Issue 2, Pages 143-156Publisher
KOREAN SOC ATMOSPHERIC ENVIRONMENT
DOI: 10.5572/KOSAE.2015.31.2.143
Keywords
Seoul; PM2.5; Chemical composition; Temporal trends; Policy directions
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The literature data of the mass concentrations of TSP, PM10, and PM2.5, and chemical composition of PM2.5 (sulfate, nitrate, ammonium, OC, and EC) from 1985 and 2013 at Seoul were collected and the temporal trends were discussed in relation with the policy directions. Generally, the mass concentrations of TSP, PM10, and PM2.5 at Seoul have showed decreasing trends. However, it is not clear what might be the major reason(s) for the trends. The concentrations of ionic component in PM2.5 showed different trends, sulfate being reduced during the 1990s but no trend during the 2000s. The concentrations of nitrate and ammonium were increasing during the 2000s. The concentrations of OC show no apparent trend while that of EC decreased. Further policy directions are suggested based on the temporal trends of the chemical composition in PM2.5 .
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