Author(s)

E.L. de Albuquerque, L.C.G. Andrietta, K.R.P. de Sousa & E. Tomaz

Abstract

Concentrations of selected Volatile Organic Compounds (VOC) were measured at five different sites in the Metropolitan Region of São Paulo (MRSP) in campaigns performed in 2001 and 2002. Active air sampling was employed to adsorb VOC in tubes packed with TENAX TA. The analyses of the samples were carried out by Thermal Desorption followed by Gas Chromatography with Flame Ionisation (FID) and/or Mass Spectrometry (MS) Detection. This work emphasizes the significant daily variation of VOC concentration during the sampling period. Among the selected VOC, toluene had the highest atmospheric concentrations, followed by benzene, m,p-xylenes and n-decane/1,2,4-TMB. Some differences were found among the sampling sites, but these were no

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