Extraction of mono- and dicarboxylic acids from a curative water |
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Authors: | C. Franke L. Weil R. Niessner |
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Affiliation: | Technical University of Munich, Institute of Hydrochemistry and Chemical Balneology, Marchioninistrasse 17, D-81377, München, Germany. |
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Abstract: | A method for the analysis of mono- and dicarboxylic acids from water is presented. For this purpose two techniques, a C(18) solid phase extraction (SPE) and a combination method of liquid-liquid extraction (LLE) and aminopropyl SPE, were tested. With the combination method all analytes, short-chain mono- and long-chain dicarboxylic acids, could be analysed in one approach. The C(18) SPE was not suitable for short-chain mono- but for dicarboxylic acids. Concentrations in the investigated water ranged from 315 mg/l (butanoic acid) to 2.9 mg/l (octanoic acid). Dicarboxylic acids were found from 5 mg/l (octanedioic acid) to 0.5 mg/l (dodecanedioic acid). |
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