Determination of Ascorbic Acid and Dehydroascorbic Acid in Biological Samples by High-Performance Liquid Chromatography Using Subtraction Methods: Reliable Reduction with Tris[2-carboxyethyl]phosphine Hydrochloride
1Department of Pharmacology and Pathobiology, Royal Veterinary and Agricultural University, 9 Ridebanevej, DK-1870, Frederiksberg C, Copenhagen, Denmark