Sample preparation method of C-14 in biologic sample and sample preparation equipment

The invention discloses a sample preparation method of C-14 in a biologic sample and sample preparation equipment. The sample preparation method comprises the steps of: burning, sublimation and absorption, i.e., placing the biologic sample into a biologic oxidation furnace, separating gas generated by oxidation by methods of dehumidifying and condensing carbon dioxide into liquid-state or solid-state phase change matter, and after the oxidation of the biologic sample is finished, heating the temperature environment of dry ice, and using absorbing liquid to absorb carbon dioxide gas obtained bysublimation of the dry ice. The sample preparation equipment can be used for implementation of the sample preparation method. Compared with the current popular NaOH absorption and titration method, the sample preparation method disclosed by the invention has the beneficial effects that the following treatment of scrapping and the like of chemical reagents and reagent bottles is not needed, so that the analysis cost can b