Abstract
Modifications of the mercury plug double dynamic coating procedure are described for the manufacture of high-phase-ratio support-coated open tubular (SCOT) columns with Silanox 101 as the solid support for non-polar stationary phases, such as Dexsil 300 GC and SE-30 Ultraphase, and Hypersil as a support for the preparation of polar POLY-S 176 SCOT columns. These columns have been used in conjunction with a falling-needle injection system, for an improved analysis of complex sterol mixtures from marine sources.
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