Simultaneous detection of anions and cations in mineral water by two dimensional ion chromatography

•Seven cations and six anions were separated simultaneously with high resolution and accuracy.•All procedures are carried out by a single 10-port valve and one injection.•The method can completely meet the demand of water quality monitoring.•The method was successfully applied to analysis of actual...

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Bibliographic Details
Published inJournal of Chromatography A Vol. 1554; pp. 123 - 127
Main Authors Fa, Yun, Yu, Yuexue, Li, Fangfang, Du, Fanglin, Liang, Xiangfeng, Liu, Huizhou
Format Journal Article
LanguageEnglish
Published Netherlands Elsevier B.V 15.06.2018
Subjects
Anions
Cations
Mineral water
Two-dimensional ion chromatography
Valve-switching
Valve-switching
Anions
Cations
Two-dimensional ion chromatography
Mineral water
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Summary:•Seven cations and six anions were separated simultaneously with high resolution and accuracy.•All procedures are carried out by a single 10-port valve and one injection.•The method can completely meet the demand of water quality monitoring.•The method was successfully applied to analysis of actual samples. A two dimensional ion chromatography (2D-IC) method was improved for the simultaneous determination of six cations and seven anions using one-valve switching after injection and conductivity detector. The trap conditions and valve-switch timing were optimized. The method has good accuracy and sensitivity for the simultaneous separation of inorganic anions and cations with a mean correlation coefficient of >0.99, repeatability of 0.60%–3.0% for eight replicates, reproducibility of 0.78%–3.1%, and spiked recovery rate of 88.7%–110%. The method was successfully applied to the analysis of inorganic anions and cations in four kinds of mineral water and can completely satisfy the demand of water quality monitoring.
ISSN:0021-9673
1873-3778
DOI:10.1016/j.chroma.2018.04.017