FIELD: oil industry.
SUBSTANCE: invention relates to gas-chromatographic methods for analysis of low-volatile polar substances and can be used in oil, gas, petrochemical industry, medicine, ecology. Method for analysing impurities of low-volatile polar substances in liquid media involves feeding an initial liquid sample with a syringe into a concentrator in a carrier gas stream for solid-phase extraction at low temperature, the solvent is blown into the atmosphere, and after input of specified volume of sample concentrator is quickly heated and desorbed concentrated impurities in gas chromatographic column for analysis, wherein initial liquid sample is pre-evaporated and introduced into concentrator in form of vapours.
EFFECT: technical result consists in reduction of input time of initial liquid sample and increase of degree of enrichment of impurities during thermal desorption.
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