食品科学 ›› 2008, Vol. 29 ›› Issue (1): 241-243.

• 分析检测 • 上一篇    下一篇

恒电流库仑分析法测定蔬菜中抗坏血酸

 王征帆, 杨艳丽   

  1. 陕西师范大学化学与材料科学学院; 陕西国防工业职业技术学院热能化工系 陕西西安710062渭南师范学院化学化工系; 陕西渭南714000; 陕西西安710302;
  • 出版日期:2008-01-15 发布日期:2011-07-28

Detection of Ascorbic Acid in Vegetables with Constant Current Coulometry Method

 WANG  Zheng-Fan, YANG  Yan-Li   

  1. 1.School of Chemistry and Materials Science, Shaanxi Normal University, Xi’an 710062, China; 2.Department of Chemistry and Chemical Engineering, Weinan Teachers College, Weinan 714000, China; 3.Department of Heat Energy and Chemical Engineering,Shaanxi Institute of Technology, Xi’an 710302, China
  • Online:2008-01-15 Published:2011-07-28

摘要: 以恒电流库仑分析法测定了蔬菜中抗坏血酸的含量,以死停终点法指示库仑滴定终点,测定结果与国标规定方法相吻合。该方法与国标方法相对比具有设备简单、快速、灵敏等优点。特别适合含深色样品的测定。

关键词:  , 恒电流库仑分析法, 抗坏血酸, 蔬菜

Abstract: To determine the content of ascorbic acid in vegetables with the constant current coulometry method, dead-stop method was used for the detection of end point of the coulometric titration. The results of detection are identical with the method of international standard. This method is simple, rapid and sensitive in comparison with the international method, especially the detection of dark samples.

Key words: constant current coulometry, ascorbic acid, vegetables