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Ion Chromatography on a latex-coated silica monolith column


Glenn, KM and Lucy, C and Haddad, PR, Ion Chromatography on a latex-coated silica monolith column, Journal of Chromatography A, 1155, (1) pp. 8-14. ISSN 0021-9673 (2007) [Refereed Article]

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DOI: doi:10.1016/j.chroma.2007.01.098


A silica monolith column (Merck Chromolith, 100 mm 4.6 mm) has been coated with Dionex AS9-SC latex nanoparticles to convert the column into an anion-exchange stationary phase. For comparison purposes, a reversed-phase silica monolith was also converted into an anion-exchange column by coating with the cationic surfactant didodecyldimethylammonium bromide (DDAB). Separations of common inorganic anions were carried out using 7.5 or 5.0 mM 4-hydroxybenzoic acid at pH 7.0 along with suppressed conductivity detection. Direct comparisons were then made between the two columns in terms of selectivity, efficiency and stability. The latex-coated column was on average 50% more efficient than the DDAB-coated column. A 10% decrease in retention times was observed on the DDAB column over 11 h of continuous eluent flow, while the latex coating exhibited <1% change in retention even after 2.5 months of periodic use.

Item Details

Item Type:Refereed Article
Keywords: Ion chromatography; Latex; Surfactant coating; Silica monolithic columns
Research Division:Chemical Sciences
Research Group:Analytical chemistry
Research Field:Separation science
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the chemical sciences
UTAS Author:Lucy, C (Professor Charles Lucy)
UTAS Author:Haddad, PR (Professor Paul Haddad)
ID Code:51162
Year Published:2007
Web of Science® Times Cited:47
Deposited By:Chemistry
Deposited On:2007-08-01
Last Modified:2010-02-01
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