Determination of trace anions in concentrated acids by means of a moderate-capacity anion-exchange column

The development of a moderate-capacity anion-exchange resin has resulted in new ion chromatography (IC) methods for the determination of trace anions is concentrated acids. Suppressed microbore IC offers a higher suppression capability, which allows higher-capacity analytical columns to be used. As...

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Bibliographic Details
Published in:Journal of Chromatography A 1992-06, Vol.602 (1), p.89-95
Main Authors: Siriraks, Archava, Pohl, Christopher A., Toofan, Mahmood
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
Chromatographic methods and physical methods associated with chromatography
Exact sciences and technology
Other chromatographic methods
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Summary:The development of a moderate-capacity anion-exchange resin has resulted in new ion chromatography (IC) methods for the determination of trace anions is concentrated acids. Suppressed microbore IC offers a higher suppression capability, which allows higher-capacity analytical columns to be used. As a result, higher-capacity columns permit higher concentrations of acids to be injected into the column without overloading, thus improving trace anion detection limits. In addition, using a selective matrix elimination method, high concentrations (% levels) of weak acids ( e.g. hydrofluoric acid and acetic acids) may be eliminated prior to analysis by IC.
ISSN:0021-9673
DOI:10.1016/0021-9673(92)80067-5