Improved Gas Chromatography of Unesterified Fatty Acids

The Flavor Spectrum of Apple Wine Volatiles.

“…Metcalf (1961) reported that a column packing consisting of a polar sub- stance and phosphoric acid were excellent, and a good quantitative analysis could be made. Jowett and Harrocks ( 1961) reported good separation of fatty acids on a column packing consisting of glass beads, polyethyleneglycol, and phosphoric acid.…”

Medium and long chain fat absorption in patients with cirrhosis.

“…Venous blood samples for the determination of octanoic acid by gas-liquid chromatography (17,18) by the Dole method (19) were drawn before infusion of the test solution, at the end of the 60-minute infusion period, and again at 120 and 180 minutes.…”

Gas Chromatography of Free Fatty Acids.

“…Other compound types such as ketones and hydrocarbons were also determined by volumetric titration methods (1,5,8) or by spectrophotometric methods (7). In all cases the analysis is time-consuming because some preliminary separation steps are usually required even when relatively pure acetylsalicylic acid is being analyzed.…”

“…In all cases the analysis is time-consuming because some preliminary separation steps are usually required even when relatively pure acetylsalicylic acid is being analyzed. For example in the official USP method (8) for the assay of aspirin tablets, three acidimetric titrations are required because of the interference of acetic acid which is usually present with acetylsalicylic acid. Furthermore, the above methods are not sensitive for low concentrations or small samples.…”