Rapid colorimetric determination of ascorbic acid by solid phase extraction of iodine into a polymethacrylate matrix

被引：15
|
作者：
Saranchina, Nadezhda, V [1 ]
Damzina, Anna A. [2 ]
Gavrilenko, Nataliya A. [2 ]
Volgina, Tatyana N. [1 ]
Ermolaev, Yaroslav E. [1 ]
Polonskaya, Marina S. [1 ]
Gavrilenko, Mikhail A. [1 ]
机构：
[1] Tomsk Polytech Univ, Tomsk 634050, Russia
[2] Tomsk State Univ, Tomsk 634050, Russia
来源：
MENDELEEV COMMUNICATIONS | 2022年 / 32卷 / 01期
关键词：
ascorbic acid; polymethacrylate matrix; solid phase spectrophotometry; iodometric method; SPECTROPHOTOMETRIC DETERMINATION; VITAMIN-C; VOLTAMMETRIC DETERMINATION; OPTICAL SENSOR; REDOX; QUANTIFICATION; OXIDATION; FOODS;
D O I：
10.1016/j.mencom.2022.01.044
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The proposed iodometric solid-phase spectrophotometry method is based on interaction of ascorbic acid with molecular iodine in a solution with further extraction of the unreacted iodine into a polymethacrylate matrix followed by its spectrophotometric measurement in the solid phase. The amount of iodine extracted by the matrix is in inverse linear dependence on the concentration of ascorbic acid in the solution. The method can be employed for the range of ascorbic acid concentrations 1.0-9.0 mg dm-3, while its detection limit is 0.8 mg dm-3.
引用
收藏
页码：136 / 138
页数：3
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