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봄철 황사의 발생과 대기 중 중금속 성분의 농도 변화 : 납성분을 이용한 사례 연구
김기현,강창희,이진흥,최금찬,윤용훈 한국대기환경학회 2004 한국대기환경학회지 Vol.20 No.6
The analysis of Pb in both PM_(25) and PM_(10) fraction of aerosols was made consecutively for every spring season during tour year period of 2001 through 2004 To diagnose the Impact of the Asian Dust (AD) on metal concentration levels, we compared our Pb measurement data after dividing the whole data sets into AD and NAD period The results of our analysis indicated that the concentrations of coarse particles increased significantly during the AD period, whereas an increase in the fine counterpart was of moderate degree. However, when Pb concentrations between AD and NAD were compared, the patterns were quite different. From all particle fractions, the Ph concentrations of NAD were slightly or moderately higher than those of AD The overall results of our study suggest that an increase in particle concentrations during the AD period can cause a rather slight reduction in Ph concentration levels, this can he explained by the dilution effect associated with the increase of Pb-depleted coarse particles