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Separation of anions by ion-interaction chromatography with a novel cationic/zwitterionic eluent


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Zhu, Y and Ling, YY and Fritz, JS and Haddad, PR (2003) Separation of anions by ion-interaction chromatography with a novel cationic/zwitterionic eluent. Journal of Chromatography A, 1020 (2). pp. 259-264. ISSN 0021-9673

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Inorganic and organic anions can be separated on an ordinary silica C18 column using a mobile phase containing tetrabutylammonium hydroxide (TBAH) and an aminosulfonic acid zwitterion reagent (MOPS). The pH of this eluent is close to 7 and the background conductivity is about 50 μS, which is low enough to permit anion analyte detection by direct conductivity. Linear calibration curves were obtained for the six anions studied and detection limits ranged from 0.075 to 0.15 mg/l (ppm) for the five inorganic anions. The method was applied to the determination of water-soluble anions in aerosol samples at concentrations as low as 0.3 mg/l.

Item Type: Article
Keywords: Aerosol analysis; Conductivity detection; Mobile-phase composition; Anions; Zwitterion
Journal or Publication Title: Journal of Chromatography A
Page Range: pp. 259-264
ISSN: 0021-9673
Identification Number - DOI: 10.1016/j.chroma.2003.08.009
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Date Deposited: 03 Oct 2008 06:33
Last Modified: 18 Nov 2014 03:51
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