METHOD OF PREPARING OIL SAMPLE FOR GAS CHROMATOGRAPHIC ANALYSIS OF LOW-VOLATILE POLAR SUBSTANCES

摘要

FIELD: physics.;SUBSTANCE: invention relates to gas-chromatographic methods of analysing oil-soluble low-volatile polar compounds and can be used in oil and other industries for their quantitative determination. Low-volatile polar substances are extracted from oil in two stages. At the first stage low-volatile polar substances are extracted using a water-alcohol extracting agent (3:1). On the second one, they are concentrated using calcium chloride and pentanol-1, which in quantitative gas-chromatographic analysis simultaneously serves as an internal standard.;EFFECT: disclosed is a gas chromatographic method of analysing oil-soluble low volatile polar compounds.;1 cl, 1 dwg, 1 tbl