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The purpose of this paper is to understand the time series and origin of a chemical component and to compare the difference during yellow sand episodes for analysis PM10 chemical components in the region of west in Korean Peninsula, 1999-2001. An annual mean concentration of PM10 is 29.1 ㎍/㎥. A monthly mean and standard deviation of PM10 concentration are very high in spring but there is no remarkably seasonal variation. Also, water soluble ionic component of PM10 be influenced by double more total anion than total cation, be included NO₃- and SO₄²- for the source of acidity and NH₄ + to neutralize. Tracer metals of PM10 slowly increases caused by emitted for soil and ocean (Fe, Al, Ca, Mg, Na) and Zn, Pb, Cu, Mn for anthropogenic source. According to method of enrichment factor (E.F) and statistics,assuming that the origin of metal component in PM10 most of element in the Earth’s crust e.g. Mg, Ca, Fe originates soil and Cu, Zn, Cd, Pb derives from anthropogenic sources. The ionic component for Na+ Cl?, Mg²+ and Ca²+ and Mg, Al, Ca, Fe originated by soil component largely increase during yellow sand period and then tracer metal component as Pb, Cd, Zn decrease. According to factor analysis, the first group is ionic component (Na+, Mg²+, Ca²+) and metal component (Na, Fe, Mn and Ni) be influenced by soil. The second group, Mg, Cr also be influenced by soil particle.
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