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Journal of Chromatography A
Volume 781, Issues 1-2, 26 September 1997, Pages 541-545
9th International Symposium on High Performance Capillary Electrophoresis and Related Microsale Techniques
Albert J. Nitowski , , Areej A. Nitowski
Available online 8 April 1998.
Abstract
The determination of specific anionic species (sodium dimethyldithiocarbamate) in waste water was performed by capillary electrophoresis with direct UV detection. The application of new technology sulfonic acid polymer-coated capillary columns achieved sensitive analysis with robust electroosmotic flow (EOF), where other coated columns and conventional fused-silica had failed due to analyte adsorption problems. Optimum conditions for the separation of cationic, neutral, and other anionic species, including quantitative analyses of the analyte of interest, were obtained. The relative standard deviations for the analysis of anions were found to be 2.7 and 12.8% for 528 and 37 μg/ml concentrations, respectively. The detcction limit for sodium dimethyldithiocarbamate in waste water was established at 1 μg/ml for typical sample size (2 ml) without preconcentration of the analyte. The usefulness of capillary electrophoresis as a routine industrial monitoring tool was successfully demonstrated.
