Rapid Potentiometric Determination of Ascorbic Acid Using Iodate as a Reagent

被引：1
|
作者：
Bevanda, Anita Martinovic [1 ]
Matic, Antonela [1 ]
Talic, Stanislava [1 ]
Ivankovic, Anita [2 ]
Prkic, Ante [3 ]
Paut, Andrea [3 ]
Vukusic, Tina [3 ]
机构：
[1] Univ Mostar, Fac Sci & Educ, Dept Chem, Mostar 88000, Bosnia & Herceg
[2] Univ Mostar, Fac Agron & Food Technol, Mostar 88000, Bosnia & Herceg
[3] Univ Split, Fac Chem & Technol, Dept Analyt Chem, Rudera Boskov 35, Split 21000, Croatia
来源：
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE | 2022年 / 17卷 / 07期
关键词：
ascorbic acid; potentiometric determination; kinetic method; iodide ion selective electrode; iodate; pharmaceuticals; SPECTROPHOTOMETRIC DETERMINATION; PHARMACEUTICAL-PREPARATIONS; TITRATION;
D O I：
10.20964/2022.07.50
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
What is proposed in is proposed a fast and simple kinetic potentiometric method for the determination of ascorbic acid (AA) in pharmaceuticals. The method was based on the reaction between AA and iodate to form iodide. A combined iodide ion-selective electrode was used in order to monitor the change in iodide concentration. In the process of a univariate optimization study, experimental conditions were determined that allow a linearity between the concentration and the change of potentials, Delta E, in the range from 8.0.10(-5) to 8.0.10(-4) mol L-1. Less than two minutes' time was needed for the proposed method to enable determination of the AA in pharmaceuticals with satisfactory recovery and the usual excipients did not act as interference.
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页数：10
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