Miniaturized capillary ion chromatograph with UV light-emitting diode based indirect absorbance detection for anion analysis in potable and environmental waters

Journal of Separation Science
Eoin MurrayBrett Paull

Abstract

A miniaturized, flexible, and low-cost capillary ion chromatography system has been developed for anion analysis in water. The ion chromatography has an open platform, modular design, and allows for ease of modification. The assembled platform weighs ca. 0.6 kg and is 25 × 25 cm in size. Isocratic separation of common anions (F- , Cl- , NO2- , Br- , and NO3- ) could be achieved in under 15 min using sodium benzoate eluent at a flow rate of 3 μL/min, a packed capillary column (0.150 × 150 mm) containing Waters IC-Pak 10 μm anion exchange resin, and light-emitting diode based indirect UV detection. Several low UV light-emitting diodes were assessed in terms of sensitivity, including a new 235 nm light-emitting diode, however, the highest sensitivity was demonstrated using a 255 nm light-emitting diode. Linear calibration ranges applicable to typical natural water analysis were obtained. For retention time and peak area repeatability, relative standard deviation values ranged from 0.60-0.95 and 1.95-3.53%, respectively. Several water samples were analysed and accuracy (recovery) was demonstrated through analysis of a prepared mixed anion standard. Relative errors of -0.36, -1.25, -0.80, and -0.76% were obtained for fluoride, chlor...Continue Reading

References

Aug 26, 2004·Analytical Chemistry·Dermot Diamond
Jun 29, 2010·Journal of Chromatography. a·Isaac K KiplagatVlastimil Kubán
Jul 31, 2013·Journal of Separation Science·Duy Anh BuiPeter C Hauser
Jun 11, 2014·Journal of Chromatography. a·Kyle R Elkin
Sep 7, 2016·Analytical Chemistry·Yan LiMirek Macka

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Citations

Jan 22, 2020·Journal of Separation Science·Samuel W FosterJames P Grinias
Jan 17, 2021·Journal of Chromatography. a·Joshua J DavisJames P Grinias
Sep 2, 2020·Analytical Chemistry·Cemil AydoğanLuigi Mondello
Oct 23, 2019·Analytical Chemistry·Alexander S KaplitzJames P Grinias
Oct 10, 2021·Journal of Separation Science·Joel B Langford, Ira S Lurie

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