title: Spectrophotometric determination of ascorbic acid with potassium hexacyanoferrate(III).
abstract: A new, simple and rapid method of determination of ascorbic acid in amounts of 45-360 mug is described. The ascorbic acid is determined spectrophotometrically at 420 nm from the decrease in absorbance it causes in 1 x 10(-3)M hexacyanoferrate(III) in McIlvaine buffer at pH 5.2. The proposed method is suitable for the determination of ascorbic acid in pharmaceutical preparations and probably natural products.
authors.affiliation: Department of Chemistry and Biochemistry, Faculty of Medicine, University of Zagreb 41000 Zagreb, Croatia, Salata 3, Yugoslavia.
authors.forename: N
authors.initials: N
authors.lastname: Burger
authors.forename: V
authors.initials: V
authors.lastname: Karas-Gasparec