Time-resolved cryogenic modulation gas chromatography reveals isomer profiles and interconversion kinetics in chromatographic reactor studies

Marriot, P, Shellie, R, Trapp, O and Schurig, V 2001, 'Time-resolved cryogenic modulation gas chromatography reveals isomer profiles and interconversion kinetics in chromatographic reactor studies', Journal of Chromatography A, vol. 919, no. 1, pp. 115-126.


Document type: Journal Article
Collection: Journal Articles

Title Time-resolved cryogenic modulation gas chromatography reveals isomer profiles and interconversion kinetics in chromatographic reactor studies
Author(s) Marriot, P
Shellie, R
Trapp, O
Schurig, V
Year 2001
Journal name Journal of Chromatography A
Volume number 919
Issue number 1
Start page 115
End page 126
Total pages 11
Publisher Elsevier
Abstract The application of laboratory-made zirconium-modified silica gels (Zr-silicas) as cation-exchange stationary phases to ion chromatography with conductimetric detection (IC-CD) for common mono- and divalent cations (Li+, Na+, NH4+, K+, Mg2+ and Ca2+) was carried out. Zr-silicas were prepared by the reaction of the silanol group on the surface of silica gel with zirconium tetrabutoxide (Zr(OCH2CH2CH2CH3)4) in ethanol. Zr-silica adsorbed on 10 mg zirconium g-1 silica gel was a suitable cation-exchange stationary phase in IC-CD for the separation of these mono- and divalent cations. Excellent simultaneous separation and highly sensitive detection for these cations were achieved in 10 min by IC-CD using a Zr-silica column (150×4.6 mm I.D.) and 10 mM tartaric acid containing 10 mM 15-crown-5 (1,4,7,10,13-pentaoxacyclopentadecane) as the eluent. The proposed IC-CD method was successfully applied to the determination of major mono- and divalent cations in natural water samples.
DOI - identifier 10.1016/S0021-9673(01)00778-6
Copyright notice © 2001 Elsevier Science B.V
ISSN 0021-9673
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