Simultaneous ion chromatographic determination of anions and cations by series conductivity and flame photometric detection

A method for the simultaneous determination of anions and cations using non-suppressed ion chromatography (NSIC) is proposed. Anions are separated on an ion-exchange column and determined with conductivity detection. In the same run the non-retained cations leaving the chromatographic system as a di...

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Bibliographic Details
Published in:Analytica chimica acta 1993-05, Vol.277 (1), p.103-111
Main Authors: Frenzel, Wolfgang, Schepers, Dietrich, Schulze, Gerhard
Format: Article
Language:English
Subjects:
Analytical chemistry
Anions
Cations
Chemistry
Chromatographic methods and physical methods associated with chromatography
Exact sciences and technology
Ion chromatography
Other chromatographic methods
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Summary:A method for the simultaneous determination of anions and cations using non-suppressed ion chromatography (NSIC) is proposed. Anions are separated on an ion-exchange column and determined with conductivity detection. In the same run the non-retained cations leaving the chromatographic system as a discrete sample zone are detected by a multi-element flame emission spectrometer which is coupled directly to the outlet. The principal analytical features of the proposed method are discussed and the experimental requirements of interfacing the two detection methods are outlined. System performance is evaluated for the high-speed NSIC of chloride, nitrate and sulphate and the multi-channel flame emission spectroscopic detection of sodium, potassium and calcium. The figures of merit are given and application to the analysis of tap, surface and mineral waters is presented.
ISSN:0003-2670
1873-4324
DOI:10.1016/0003-2670(93)85095-2