1999년 4월부터 2000년 6월까지 황해 덕적도에서 관찰된 대기오염물질 변화 특성

Abstract

Sulfur dioxide (SO2), ozone, total suspended particulates (TSP) and PM2.5were measured at Deokjeok Island inthe Yellow Sea during April 1999 to June 2000. Although the emission amount of air pollutants is quite low in thissmall island of 36km2 -firing power plantand a wharf for ferryboat. The island is also influenced from the emissions from the greater Seoul area in the eastand from China in the west. In order to characterize the pollutant variations due to interactions between transportand local emissions, the correlation between variations of SO2 and ozone was investigated. Mass and ion concen-trations of TSP and PM2.5the two gaseous species in spring and winter. The effects of transport were pronounced on the days of positive cor-relation in spring with higher concentrations of ozone and PM2.5. TSP concentrations were also high on these daysbecause of high wind speeds. On the days of negative correlation in spring, frequent fog associated with low windspeeds facilitated SO2 oxidation and increased sulfate accompanied with decrease in nitrate in PM2.5and chloride inTSP. This latter phenomena was noticeable since it showed that chemical composition of fine particles could besignicantly altered not only during the transport but also by local environment.