Particle and Aerosol Research Vol. 1, No. 1, December 2005 |
ISSN : 1738-8716 (Print) ISSN : 2287-8130 (Online) |
A study of airborne zinc distribution and its relation with the Asian Dust
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Abstracts
The analysis of Zn was made from both PM2.5 and PM10 fractions of aerosols for every spring season from
2001 to 2004. To diagnose the impact of the Asian Dust (AD) on metal concentration levels, we compared our Zn
measurement data after dividing the whole data sets into AD and NAD period. It was found that the PM
concentrations of coarse particles increased significantly during the AD period, whereas a notable reduction was
found in Zn content. When Zn concentrations between AD and NAD were compared, the patterns of Zn
distribution were quite different depending on the particle size. It was also seen that an increase in particle
concentrations during the AD period can cause a rather slight reduction in Zn concentration levels, especially in the
coarse fraction; this can be explained by the dilution effect associated with the increase of Zn-depleted coarse
particles. The overall results of this study show that the environmental behavior of Zn is quite unique to be
distinguished from the other metals in their enrichment or depletion pattern.
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