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KMID : 0382420000260020041
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Korean Journal of Environmental Health Society
2000 Volume.26 No. 2 p.41 ~ p.48
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A Study on the Characteristics of Concentrations of Atmospheric Aerosols in Pusan
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Choi Kum-Chan
Jeon Bo-Kyung
Yoo Su-Young
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Abstract
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This study has been carried out to determine the seasonal characteristics of concentration of various ionic(Cl^-, NO_3^-, SO_4^2-, Na^+, NH_4^+, K^+, Ca^2+) and heavy metallic(Pb, Mn, Cu, Ni) species in Pusan from August 1997 to April 1998. The concentrations of Cl^-, Na^+, K^+ were higher during summer with 2.98 ㎍/㎥, 3.00 ㎍/㎥, 1.25 ㎍/㎥ respectively but the concentration of NH_4^+ was higher during winter with 2.46 ㎍/㎥. Seasonal variation of total concentration of heavy metals(Pb, Cu, Mn, Ni) were 186.0 ng/㎥ in summer, 222.6 ng/㎥ in autumn, and 135.83 ng/㎥ in winter. Over the seasons inspected, the concentration of Mn was higher in coarse particles than fine particles and concentration of Ni was higherin fine particles than coarse particles. During yellow sand period, the concentration of TSP was increased about two times than that of other period. SO_4^2-, Ca^2+ concentrations were higher than other ionic components because of soil particles. The concentration of Ni showed 94.62 ng/㎥ was increased about 4~5 times than other period. Principal component of the yellow sand, SO_4^2-, Ca^2+ could be discreased by rainfall and washout effect of atmospheric aerosol was higher in coarse particles than fine particles. Results from PCA(principal component analysis) showed that major pollutant was NaCl by seasalt particulate and (NH_4)_2SO_4.
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KEYWORD
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