Application of Capillary Zone Electrophoresis for the Analysis of Low Molecular Weight Organic Acids in Environmental Samples |
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| Authors: | Jessika Hagberg Johan Dahlén Stefan Karlsson Bert Allard |
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| Institution: | 1. Man- Technology- Environment Research Centre, ?rebro University , SE-701 82, ?rebro, Sweden;2. National Laboratory of Forensic Science , SE-581 94, Link?ping, Sweden;3. Man- Technology- Environment Research Centre, ?rebro University , SE-701 82, ?rebro, Sweden;4. School of Biosciences and Process Technology, V?xj? University , SE-351 95, V?xj?, Sweden |
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| Abstract: | Abstract The applicability of a recently developed capillary zone electrophoretic (CZE) method for the determination of low molecular weight (LMW) organic acids in water was tested on five types of environmental samples (rainwater, water extract from peat, and soil water from two polluted sites). A full baseline resolved separation of fourteen commonly found LMW carboxylic acids in natural waters (malonic, oxalic, fumaric, maleic, formic, succinic, tartaric, glutaric, adipic, acetic, propionic, butyric, valeric and citric acids), was achieved within eight minutes. The limits of detection (2 X noise) were in the ranges 90–200 μg/l and 0.5 – 5 μg/l for hydrodynamic and electrokinetic injection, respectively. Two different CZE systems, a Waters Quanta 4000 and a Hewlett Packard HP 3DCE system, were used and their performance compared. |
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| Keywords: | Capillary zone electrophoresis carboxylic acids environmental samples |
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