Authors: S Mohsenei, AA Ensafi

Publication date: 1998/6/22

Journal name: Journal of Sciences, Islamic Republic of Iran

Volume: 9

Abstract A simple and rapid method has been developed for the determination of ascorbic
acid in fruit and pharmaceutical products. The method is based on the measurement of the
reaction rate between ammonium molybdate and ascorbic acid in acidic media. The reaction
was monitored spectrophotometrically at 800 nm by fixed-time and variable—time methods.
The calibration graph was linear in the range of 50>< lO"-6.0>< l0 '3 M ascorbic acid when
using a fixed-time method. The relative standard deviation for ten replicate analyses is 2.7 ...