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Química Nova

Print version ISSN 0100-4042On-line version ISSN 1678-7064


SOUZA, Silvia Ribeiro de  and  CARVALHO, Lilian R. Franco de. Origin and implication of carboxylic acids in the atmosphere. Quím. Nova [online]. 2001, vol.24, n.1, pp.60-67. ISSN 0100-4042.

A general overview about the ambient levels of low molecular weight carboxylic acids and their possible emission sources, as well as the implication of them in the atmosphere is presented. Carboxylic acids are considered to be one of the dominant classes of organic compounds found in the atmosphere in a variety of phases, such as in rainwater, snow and ice, on aerosol particles and gas phase. They may be originated from biogenic and anthropogenic direct emissions and by photochemical reaction in situ. Emission sources and formation mechanisms of organic acids in the atmosphere are discussed.

Keywords : atmospheric carboxylic acids; biogenic and anthropogenic emissions; photochemical reactions products.

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