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Dissertation10.47749/t/unicamp.2007.412292

Compostos organicos volateis na atmosfera urbana da região metropolitana de São Paulo

Édler Lins de Albuquerque-2007-05-14
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TL;DRAbstract

The aim of this research was an experimental study of Volatile Organic Compounds (VOCs) found in the urban atmosphere of Metropolitan Area of São Paulo (MASP).The main purpose was to measure atmospheric concentrations of VOCs.Multivariate analyses were used to identify relationships among VOCs concentration, meteorological parameters and concentrations of other pollutants.Passive and active sampling methods were applied.Steel tubes packed with adsorbent TENAX TA were employed.The samples were quantified by automatic thermal desorption and gas chromatography with flame ionization detection.Selected VOCs were analyzed, including alkanes, cycloalkanes and aromatic compounds.Many topics related to VOCs were investigated: vehicular emissions, time variation of concentrations, employ of passive sampling, potential of ozone formation etc.For this, some specific studies were conducted.VOCs concentration vary a lot in each campaign in function of aspects associated to local characteristics of e

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The aim of this research was an experimental study of Volatile Organic Compounds (VOCs) found in the urban atmosphere of Metropolitan Area of São Paulo (MASP).The main purpose was to measure atmospheric concentrations of VOCs.Multivariate analyses were used to identify relationships among VOCs concentration, meteorological parameters and concentrations of other pollutants.Passive and active sampling methods were applied.Steel tubes packed with adsorbent TENAX TA were employed.The samples were quantified by automatic thermal desorption and gas chromatography with flame ionization detection.Selected VOCs were analyzed, including alkanes, cycloalkanes and aromatic compounds.Many topics related to VOCs were investigated: vehicular emissions, time variation of concentrations, employ of passive sampling, potential of ozone formation etc.For this, some specific studies were conducted.VOCs concentration vary a lot in each campaign in function of aspects associated to local characteristics of e

Keywords

EthylbenzeneEnvironmental chemistryEnvironmental scienceTenaxFlame ionization detectorTolueneOzoneAtmosphere (unit)

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