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Determination of trace perchlorate in river water by ion chromatography with online matrix removal and sample concentration

Determination of trace perchlorate in river water by ion chromatography with online matrix... This paper proposes a simple ion chromatographic approach to determine trace amounts of perchlorate in river water samples. Determination of the trace perchlorate by ion chromatography typically faces two challenges: interference by matrix ions such as chloride, nitrate, and sulfate in the samples and insufficient detection sensitivity. In the present study, online pretreatment of the samples with an OnGuard II Ba/Ag/H disposable sample pretreatment cartridge prevented the sulfate peak tailing from overlapping with the perchlorate peak on the chromatogram. In addition, the matrix removal enabled as large as 10 mL of sample to be loaded into a high exchange capacity anion concentrator, significantly improving perchlorate's detection sensitivity. The proposed approach achieved a detection limit (S/N = 3) of 0.046 µg L−1 without using a costly mass spectrometer and successfully determined sub µg L−1 levels of perchlorate in river water.Graphical abstract[graphic not available: see fulltext] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Analytical Sciences Springer Journals

Determination of trace perchlorate in river water by ion chromatography with online matrix removal and sample concentration

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References (34)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to The Japan Society for Analytical Chemistry 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
ISSN
0910-6340
eISSN
1348-2246
DOI
10.1007/s44211-022-00262-9
Publisher site
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Abstract

This paper proposes a simple ion chromatographic approach to determine trace amounts of perchlorate in river water samples. Determination of the trace perchlorate by ion chromatography typically faces two challenges: interference by matrix ions such as chloride, nitrate, and sulfate in the samples and insufficient detection sensitivity. In the present study, online pretreatment of the samples with an OnGuard II Ba/Ag/H disposable sample pretreatment cartridge prevented the sulfate peak tailing from overlapping with the perchlorate peak on the chromatogram. In addition, the matrix removal enabled as large as 10 mL of sample to be loaded into a high exchange capacity anion concentrator, significantly improving perchlorate's detection sensitivity. The proposed approach achieved a detection limit (S/N = 3) of 0.046 µg L−1 without using a costly mass spectrometer and successfully determined sub µg L−1 levels of perchlorate in river water.Graphical abstract[graphic not available: see fulltext]

Journal

Analytical Sciences – Springer Journals

Published: May 1, 2023

Keywords: Perchlorate; Ion chromatography; River water; Solid-phase extraction; Preconcentration

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