The invention provides a quantitative
analysis method for volatile components in liquid products of a thermal-
simulation hydrocarbon generation experiment. The quantitative
analysis method comprises the following steps of collecting and treating the liquid products of the thermal-
simulation hydrocarbon generation experiment, specifically, collecting, removing water, removing
slag and injecting a standard sample; quantitatively analyzing the volatile components in the liquid products of the thermal-
simulation hydrocarbon generation experiment through a comprehensive two-dimensional
gas chromatography-
hydrogen flame ionization detector, specifically, carrying out primary comprehensive two-
dimensional analysis, volatilizing to reach constant weight and secondary comprehensive two-
dimensional analysis; calculating a quantification result of the volatile components in the liquid products of the thermal-simulation hydrocarbon generation experiment. The quantification result of the volatile components in the liquid products of the thermal-simulation hydrocarbon generation experiment, which is obtained by the quantitative
analysis method disclosed by the invention, is real, reliable and high in repetitiveness, so that a reliable
technical support is supplied to evaluation of an oil-gas resource amount.