FIELD: analytical chemistry, chromatographic methods of study of gaseous mixtures carrying hydrocarbons. SUBSTANCE: polar compound is used in process of preparation of calibration mixtures in the capacity of solvent of calibration component. Calibration and analyzed mixtures are passed through chromatographic column with two sorbents: inert adsorbent-inerton which presents diatomite carrier treated with dimethylchlorsilane as passivating agent and selective adsorbent-sorbent of silica family. Individual signals are recorded. Values of total concentrations of sought-for components are determined on basis of design formulas. EFFECT: enhanced efficiency of determination of sought-for components due to increased sensitivity and minimization of volume of calibration mixtures, raised determination accuracy thanks to selective separation of sum of sought-for components from accompanying impurities. 2 cl, 2 dwg, 1 tbl
