title: Extraction of mono- and dicarboxylic acids from a curative water.
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).
authors.affiliation: Technical University of Munich, Institute of Hydrochemistry and Chemical Balneology, Marchioninistrasse 17, D-81377, München, Germany.
authors.forename: C
authors.initials: C
authors.lastname: Franke
authors.forename: L
authors.initials: L
authors.lastname: Weil
authors.forename: R
authors.initials: R
authors.lastname: Niessner