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광주지역 황사시 미세먼지 유입경로별 중금속 오염도 평가
양윤철,이세행,박병훈,조광운,윤상훈,박지영,장동,정지효,배석진,정숙경,Yang, Yoon-Cheol,Lee, Se-Haeng,Park, Byoung-Hoon,Jo, Gwang-Un,Yoon, Sang-Hoon,Park, Ji-Young,Jang, Dong,Chong, Ji-hyo,Bae, Seok-Jin,Jeong, Suk-Kyoung 한국환경과학회 2020 한국환경과학회지 Vol.29 No.1
The purpose of this study is to investigate the relationship of fine dust PM<sub>10</sub> and heavy metals in PM<sub>10</sub> 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 ㎍/㎥ of fine dust PM<sub>10</sub> in Gwangju area were analyzed. Also, the characteristics of the heavy metals were analyzed using the correlation between the heavy metals in PM<sub>10</sub>. As a result of analyzing Asian dust entering the Gwangju region for 6 years, the average concentration of PM<sub>10</sub> measured in Asian dust was 148 ㎍/㎥, which was about 4.5 times higher than in non-Asian dust, 33 ㎍/㎥. 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 PM<sub>10</sub> and artificial heavy metal components was high, indicating that the influence of industrial activities in Gwangju area was high.