中文摘要：

利用3-对硝基苯基-5-（2′-磺酸基苯偶氮）若丹宁-盐酸-高锰酸钾化学发光体系,实现以流动注射化学发光法对食品中抗坏血酸质量浓度的测定。结果得出：检出限为0.031 mg/L,线性范围为0.05~10 mg/L。进而采用循环伏安法探讨3-对硝基苯基-5-（2′-磺酸基苯偶氮）若丹宁的发光机理。

英文摘要：

The mass concentration of ascorbic acid in foodstuff was determined by flow injection chemiluminescence method with a novel 3-（4′-nitryl）-5-（2′-sulfonic-phenylazo） rhodanine-HCl-KMnO4 chemiluminescence reaction system.The linear range was from 0.05 to 10 mg/L with the detection limit of 0.031 mg/L.The method was successfully applied in the determination of ascorbic acid.And the chemiluminescence mechanism of 3-（4′-nitryl）-5-（2′-sulfonic phenylazo） rhodanine was studied by cyclic voltammetry.