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维生素C片中维生素C测定方法比较
引用本文:宋秀丽,葛海龙. 维生素C片中维生素C测定方法比较[J]. 太原师范学院学报(自然科学版), 2013, 0(4): 132-137
作者姓名:宋秀丽  葛海龙
作者单位:太原师范学院化学系,山西太原030031
摘    要:系统比较测定维生素C含量的三种方法,分析每种测定方法的优缺点.实验结果表明:用直接碘量法、返滴定法、2,6-二氯酚靛酚法测得维生素C片中维生素C的含量分别为86.45%,86.37%,86.57%,从而确定最适合测定维生素C片中维生素C含量的方法是直接碘量法.

关 键 词:测定方法比较  维生素C  直接碘量法  返滴定法  2,6-二氟酚靛酚钠法

Comparison of Determination Methods for Vitamin C in Vitamin C Tablets
Song Xiuli,Ge Hailong. Comparison of Determination Methods for Vitamin C in Vitamin C Tablets[J]. Journal of Taiyuan Normal University:Natural Science Edition, 2013, 0(4): 132-137
Authors:Song Xiuli  Ge Hailong
Affiliation:(Department of Chemistry, Taiyuan Normal University, Taiyuan 030031, China)
Abstract:Vitamin C in Vitamin C tablets was determined using three different methods. And advantages and disadvantages of each method was compared and analyzed. The experiment results show that measurement, direct deter-mination of iodine content was 86.45%, anti-Deter-mination of content 86.37%,2,6-dichlorophenolindophenol Determination of content of 86.57%, to determine a suitable method for determination of vitamin C content is a direct iodometric meth-od.
Keywords:determination  vitamin C  direct iodometric method  anti-titration  2,6-dichlo-rophenolindophenol titration
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