Summary
A method for the determination of low relative molecular mass carboxylic acids (C1−C4) in water is reported. The acids are converted to p-bromophenacyl esters prior to a glass-capillary gas chromatographic separation. By utilizing electron-caputre detection the detectability is substantially improved compared to flame-ionization detection. A comparison of three different ways to treat the water samples and to produce the derivatives is made. It is shown that the α, p-dibromoacetophenone reagent decomposes to a small extent which limits the utility of the reagent. Nevertheless a detection limit for formic acid of approximately 2.5 mgl−1 is obtained. The method is applied to the determination of formic and acetic acids in a paper kraft water sample.
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Larsson, M., Roos, C. Determination of C1−C4 fatty acids as p-bromophenacyl esters using glass-capillary gas chromatography and electron-capture detection. Chromatographia 17, 185–190 (1983). https://doi.org/10.1007/BF02290554
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DOI: https://doi.org/10.1007/BF02290554