流动注射化学发光法测定抗坏血酸及机理  

Determination of Ascorbic Acid by Flow Injection Chemiluminescence and Its Mechanism

作　　者：赵珮妮[1] 谭云[2] 高伟强[1] 于京华[1] 

机构地区：[1]济南大学化学化工学院,山东济南250022 [2]济南市产品质量监督检验所,山东济南250022

出　　处：《济南大学学报（自然科学版）》2011年第3期243-247,共5页Journal of University of Jinan(Science and Technology)

基　　金：国家自然科学基金(50972050)

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。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.

关 键 词：3-对硝基苯基-5-(2′-磺酸基苯偶氮)若丹宁 化学发光 抗坏血酸 循环伏安 发光机理 

分 类 号：O657.39[理学—分析化学]