FLOW-ANALYSIS OF HYDROGEN-PEROXIDE WITH A DYE-FORMATION REACTION CATALYZED BY AN ION-EXCHANGE RESIN MODIFIED WITH MN3-TETRAKIS(SULFOPHENYL)PORPHINE()

The present flow analysis of hydrogen peroxide is based on a measureme nt of the absorbance of quinoid-dye formed by a following reaction (1) using an anion-exchange resin modified with manganese(III)-tetrakis(s ulfophenyl)porphine (Mn-TSPPr), which catalyzes the reaction (1), just like an immobilized peroxidase: 4-aminoantipyrine+4-chlorophenol+2H(2 )O(2) (Ma-TSPPr) under right arrow quinoid dye+4H(2)O [reaction (1)]. Mn-TSPPr is more advantageous than immobilized peroxidase in terms of storage and stability for both temperature and moisture. The present f acilitated method is satisfactory in reproducibility and sensitivity.