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Preparation of highly efficient monolithic silica capillary columns for the separations in weak cation-exchange and hilic modes

Jaafar, Jafariah and Ikegami, Tohru and Horie, Kanta and Hosoya, Ken and Tanaka, Nobuo (2007) Preparation of highly efficient monolithic silica capillary columns for the separations in weak cation-exchange and hilic modes. Journal of Biochemical and Biophysical Methods, 70 (1). pp. 31-37. ISSN 0165-022X

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Official URL: http://dx.doi.org/10.1016/j.jbbm.2006.09.010

Abstract

Weak cation-exchange (WCX) and HILIC modes columns were prepared by on-column polymerization of acrylic acid on monolithic silica capillary columns modified with N-(3-triethoxysilylpropyl)methacrylamide anchor groups. The polymer-coated columns could be used for HILIC mode separation of pyridylamino (PA)-sugars and peptides including a tryptic digest of BSA, while for weak cation-exchange mode for the separation of proteins and nucleosides even at high linear velocity. The poly(acrylic acid) coated monolithic silica capillary columns showed greater retention toward PA-sugars than a polyacrylamide coated monolithic silica capillary columns prepared in the same manner. Proteins and nucleosides were separated effectively at pH 6.9 using the same column. The column provided fair permeability after the polymer-coating step. High-speed separation of proteins at u = 4.66 mm/s with high efficiency was shown to be possible, while high-speed separation of nucleosides has achieved within one minute using the column at u = 8.67 mm/s, suggesting that the column will be suitable for the second dimension separation of multidimensional HPLC systems.

Item Type:Article
Uncontrolled Keywords:monolithic silica column; polymer-coated; HILIC HPLC; weak cation exchange; high-speed separation
Subjects:Q Science > QD Chemistry
Divisions:Science
ID Code:8802
Deposited By:INVALID USER
Deposited On:13 May 2009 03:58
Last Modified:13 May 2009 03:58

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