Determination of Ascorbic Acid Using a New Oscillating Chemical System of Lactic Acid-Acetone-BrO3--Mn2+-H2SO4

• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2002,（10）
• 页码范围: 1019-1024
• 页数: 6页
• 语种: 英文

摘要

Analyte pulse perturbation ( APP ) technique was applied to the study of the perturbation of ascorbic acid (AA) on the lactic acid-acetone-BrO3--Mn2+-H2SO4 oscllating reaction, and AA was determined using this new oscillating chemical system. Influence of experimental variables was investigated. The linear range lies between 5.0 × 10-7-5.5 × 10-5 mol/L, and the precision and throughput were quite good (2.43% as RSD,and 8-10 samples/h, respectively). This method was applied to the determination of real samples and the results were satisfactory. Some aspects of the potential mechanism of action of AA on the oscillating systems are discussed.