Purification of OV-17 by supercritical fluid fractionation for fused silica capillary gas chromatography

✍ Scribed by Barry, E. F. ;Ferioli, P. ;Hubball, J. A.

• Publisher: John Wiley and Sons
• Year: 1983
• Tongue: English
• Weight: 452 KB
• Volume: 6
• Category: Article
• ISSN: 0935-6304
• DOI: 10.1002/jhrc.1240060402

✦ Synopsis

Abstract

Commercially available OV‐17 was partitioned into a low and a higher molecular weight fraction by supercritical fluid extraction with carbon dioxide. This higher molecular weight fraction is more thermally stable than the original OV‐17 due to its more viscous and gum‐like nature. Based on the growing evidence in the literature that a deactivating agent for fused silica open tubular columns should be compatible with the stationary phase, a precoat of 1,3,5‐trimethyl‐1,3,5‐triphenylcyclotrisiloxane was applied prior to the static coating of high molecular weight OV‐17. Fused silica OV‐17 columns prepared in this fashion are stable up to 300°C.