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Determination of trace amounts of carboxylic acids in ambient air by capillary gas chromatography - mass spectrometry

: Emmrich, M.; Levsen, K.; Sollinger, S.

Journal of Chromatography 609 (1992), S.297-304
ISSN: 0021-9673
ISSN: 0376-737X
ISSN: 0378-4355
Fraunhofer ITA ( ITEM) ()
air; air sampling instrument; analysis; analytical chemistry; carboxylic acid; chemistry; chromatographic analysis; gas chromatography; indoor air pollution; mass spectrometry

A method for the determination of organic acids in ambient air using an ion-exchange resin in a bifunctional manner is presented. The ion-exchange resin is used as an adsorbent for sampling and subsequently as catalyst for the methylation of the adsorbed acids by methylformate. The methyl esters are analysed by gas chromatography or gas chromatography-mass spectrometry. This method can be used to monitor workplace atmospheres and to analyse other ambient air samples.