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KMID : 1024520200290010055
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Journal of the Environmental Sciences
2020 Volume.29 No. 1 p.55 ~ p.68
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Estimation of Heavy Metal Contamination by PM10 Inflow Pathways while Asian Dust in Gwangju
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Yang Yoon-Cheol
Lee Se-Hang
Park Byoung-Hoon
Jo Gwang-Woon
Yoon Sang-Hoon
Park Ji-Young
Jang Dong
Chong Ji-Hyo
Bae Seok-Jin
Jung Sook-Kyoung
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Abstract
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The purpose of this study is to investigate the relationship of fine dust PM10 and heavy metals in PM10 in Asian dust flowing into Gwangju from 2013 to 2018. The migration pathways of Asian dust was analyzed by backward trajectory analysis using HYSPLIT (Hybrid Single Particle Lagrangian Integrated Trajectory) model, and the change of heavy metal concentration and heavy metal content per 1 μg/m3 of fine dust PM10 in Gwangju area were analyzed. Also, the characteristics of the heavy metals were analyzed using the correlation between the heavy metals in PM10. As a result of analyzing Asian dust entering the Gwangju region for 6 years, the average concentration of PM10 measured in Asian dust was 148 μg/m3, which was about 4.5 times higher than in non-Asian dust, 33 μg/m3. A total of 13 Asian dust flowed into the Gwangju during 6 years, and high concentration of PM10 and heavy metals in that were analyzed in the C path flowing through the Gobi/Loess Plateau-Korean Peninsula. As a result of the correlation analysis, in case of Asian dust, there was a high correlation between soil components in heavy metals, so Asian dust seems to have a large external inflow. On the other hand, in case of non-Asian dust, the correlation between find dust PM10 and artificial heavy metal components was high, indicating that the influence of industrial activities in Gwangju area was high.
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KEYWORD
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Asian dust, PM10, Heavy metal, Inflow pathway, Correlation
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