USE OF A PACKED PROGRAMMED-TEMPERATURE VAPORIZER INJECTOR IN THE SOLVENT ELIMINATION MODE FOR THE DETERMINATION OF FATTY-ACID METHYL-ESTERS BY GAS-CHROMATOGRAPHY

It is shown that when using a programmed-temperature vaporizer as the injection device for the gas chromatographic determination of fatty acid methyl esters in the solvent elimination mode, losses of medium-chain solutes during the solvent elimination step can be avoided by packing the glass liner of the injector with materials providing adequate retention characteristics. Silanized glass-wool proved to be a good material for this purpose. Other parameters such as solvent elimination temperature, nature of the solvent and solute vaporization temperature were also studied in order to achieve optimum injection conditions.