Macro—and Microdetermination of Ascorbic Acid Using Potassium Permanganate as an Oxidant in Fluoride Medium

Cbemistry Department, Faculty of Science, Assiut University, Assiut, Egypt Manuscript received 6 March 1980, revised 20 September 1980, accepted 5 November 1980 An accurate and precise method is given for the determination of ascorbic acid by direct visual, potentiometric and amperometric titrations with permanganate as an oxidant in fluoride medium. Amounts of ascorbic acid down to 7.08 µg could be deter­mined accurately under the optimum conditions