We will report the mass concentration of the finest (PM2.5) and coarse (PM2.5-10) airborne particles in ambient air of Kuala Lumpur area collected using GENT Stack filter unit fitted with appropriate polycarbonate filters. The sampling site ( Lat: 03° 10' 30" Long: 101° 43' 24.2" ) is about 1 km from Kuala Lumpur City Center. Elemental concentration in the samples collected once every month throughout the year 2002 has been analyzed using the currently available NAA facilities at MINT. Elements determined in the study include Al, As, Br, Co, Cr, K, Lu, Mn, Na, Sb, Sc, Ti, V, and Zn. Quality control material used to control the quality of the analytical procedures was NBS 1633a.
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