✦ LIBER ✦

Silica surface interactions of diol-bonded phases in packed capillary column supercritical fluid chromatography

✍ Scribed by Yufeng Shen; Milton L. Lee

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 542 KB
Volume: 8
Category: Article
ISSN: 1040-7685
DOI: 10.1002/(sici)1520-667x(1996)8:6<413::aid-mcs6>3.0.co;2-4

No coin nor oath required. For personal study only.

✦ Synopsis

3-Glycidoxypropyltrimethoxysilane (GPTMS), methyltriethoxysilane (MTES), and 3-glycidoxypropyldimethylethoxysilane (GPDMES) bonded phases were prepared for packed capillary column supercritical fluid chromatography (SFC). Additional active sites on the bonded surface were eliminated using an end-capping reaction of 1,1,1,3,3,3-hexamethyldisilazane (HMDS). Hydrogen-bond interactions between the hydroxyl groups on the bonded phases and the residual silanols on the silica surface were investigated. The chromatographic performances of the bonded phases were investigated by the separation of polar organic compounds, including alcohols, phenols, diols, ketones, aldehydes, esters, carboxylic acids, and amines, using packed capillary column SFC with neat CO,. o 1996

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