Department of Chemistry, Faculty of Engineering, Yamanashi University, Kofu-shi, 400, Japan
Abstract:
A method for flow enthalpimetric determination of H2O2 is described. The method uses manganese dioxide to catalyse the decomposition of H2O2. The catalyst is stable enough to be used for at least 500 analyses. H2O2 in the concentration range 0.01–10mM is determined with coefficients of variation < 2%. The method has been used for determination of glucose in a non-alcoholic beverage and wines, with glucose oxidase as the peroxide-producing enzyme.