The extraction procedure using solvent mixtures has been used to elute n-alkanes adsorped by 5molecular sieve and subsequent stable carbon isotope ratio analysis of individual n-alkanes. However,a 5molecular sieve may catalyze the hydrogen exchange of organic molecules during long-term heating. Therefore,the usage of this method for hydrogen isotopic analysis needs to be evaluated. Two different types of crude oil saturated hydrocarbon and n-alkanes mixed standard samples were used as the object for this ...