抄録
Total phosphorus in the samples containing organic phosphorus compound, organic polyphosphate and inorganic polyphosphate were determined as orthophosphates by ionchromatography after acid-hydrolysis and photochemical decomposition. With the procedure, oxalic acid was used for thermal acid-hydrolysis of polyphosphate chain, and ultra-violet radiation for photo-oxidation of organic parts of compound and oxalic acid. The method avoids contamination of the final phosphate solution with excess acids those are used in conventional acid-hydrolysis methods.
