Chapter 23 Nonhydrocarbon gases

Janák, J.

doi:10.1016/s0301-4770(08)61354-8

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1995

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“…Silica gel has been used as packing material for packed columns since the beginning of gas chromatography. Jan& described what he called azotometer chromatography and mentioned the use of columns of silica gel and active carbon in 1950 [9]. Fish et al used silica gel for the analysis of combustion products [ 101.…”

Section: Introductionmentioning

confidence: 99%

Preparation of silica porous‐layer open‐tubular columns using fused silica capillaries

Huang

Markides

Lee

1995

J Microcolumn Separations

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Abstract. We report a simple method for the preparation of silica PLOT columns using fused silica capillaries. In this method, silica particles were suspended in a methylene chloride/pentane solution containing polymethylhydrosiloxane and passed through the capillary tubing. This caused the silica particles to be dynamically coated on the inner wall of the fused silica capillary. The column was dried and heated, which facilitated the simultaneous deactivation and bonding of a uniform mono-layer of porous silica on the inner wall of the capillary tubing. These columns were used to separate light hydrocarbons, chlorinated hydrocarbons, and aromatic compounds.

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Section: Introductionmentioning

confidence: 99%