Characterization of OV-1/FFAP-mixture coated glass capillary columns used for the separation of free fatty acids

✍ Scribed by Pörschmann, J. ;Welsch, T. ;Engewald, W. ;Vigh, Gy.

• Publisher: John Wiley and Sons
• Year: 1984
• Tongue: English
• Weight: 379 KB
• Volume: 7
• Category: Article
• ISSN: 0935-6304
• DOI: 10.1002/jhrc.1240070903

✦ Synopsis

Abstract

As an alternative to acid pretreated UCON and FFAP capillaries for the analysis of wide‐boiling free fatty acid mixtures, OV‐1 : FFAP phase mixtures were used on high‐temperature silylated inert glass capillary columns. The HETP‐carrier gas velocity curves, peak asymmetry factors, coating efficiency, gas phase and stationary phase contributions to the mass transfer resistance were determined for various OV‐1 : FFAP ratios. Mixed‐phase capillaries showed optimum performance at a 2 : 1 OV‐1 : FFAP ratio. The thermal and long‐term stability of OV‐1‐stabilized FFAP columns surpassed those of the UCON and pure FFAP reference column used.