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Environmental monitoring requires reliable and effective analytical technique different concentration ranges. With this aim, an analytical method was develope direct analysis of atmospheric particulate solid samples using graphite fu atomic absorption spectrometry (GFAAS) to determine metalic elements (Cd, Co Cr). lhe filters were subsampled using clean stainless steel punch (2 mm diam and this disc was inserted directly into the graphite tube using a stainless tweezer. It was also investigated the influence of the thermal pretreatment of Pd/Mg mo in the absorbance signal of some elements such as Cd, Pb, As, Se, Sb, Cr and combination of different analytical methods like ICP-AES (Inductively Co Plasma-Atomic Emission Spectrometry); IC (Ion Chromatography), XRFS (X Fluorescence Spectrometry), INAA (Instrumental Neutron Activation Analysis PIXE (Particle Induced X Ray Emission) were used to find the requerimen receptor model analysis and intercomparison of the results. Principal Component Analysis (PCA) was applied to identify the particles sou Four sources were identified: the first factor (Cd, Cu , K, Pb, Se, Sn, Sb) is assoc to industrial emission and garbage burning. lhe second factor with high values Ca, Co, Fe, S, and also to Na+, N03-e NH/ can be associated with resuspe soil dust and biogenic emission. lhe third factor (Cr and As) is associated to temperature process and the fourth factor (S04 =) to sulphuric acid emission fr factory near the sampling point or to photochemical reactions of S and compounds. 4.10. Cálculo da concentração em ng/m