Sorption-photometric determination of ascorbic acid using molybdosilicic heteropolyacid and polyurethane foam after microwave irradiation

被引：11

作者：

Dmitrienko, SG ^{[1
]}

Goncharova, LV ^{[1
]}

Zhigulev, AV ^{[1
]}

Nosov, RE ^{[1
]}

Kuzmin, NM ^{[1
]}

Zolotov, YA ^{[1
]}

机构：

[1] Moscow MV Lomonosov State Univ, Dept Chem, Div Analyt Chem, Moscow 119899, Russia

来源：

ANALYTICA CHIMICA ACTA | 1998年 / 373卷 / 2-3期

基金：

俄罗斯基础研究基金会;

关键词：

ascorbic acid; molybdosilicic acid; polyurethane foams; microwave irradiation; diffuse reflectance spectroscopy;

D O I：

10.1016/S0003-2670(98)00394-8

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An analytical procedure for the determination of ascorbic acid based on the reduction of molybdosilicic heteropolyacid immobilized on polyurethane foam by ascorbic acid in a microwave oven is developed. A blue-colored product of reduction of molybdosilicic heteropolyacid was determined immediately in the polyurethane foam using diffuse reflectance spectroscopy. The method was used to determine ascorbic acid in the range 0.6-40 mg/ml in the final measured solution. The application of microwave irradiation allows to shorten the analysis time from 20 h to 6.5 min. The substances, which usually accompany ascorbic acid, are tolerable. The proposed method can be applied for the determination of ascorbic acid in fruit juices and pharmaceutical preparations with satisfactory results. The reliability of the method was established by replicate determinations against the official Russian pharmacopoeial method. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：131 / 138

页数：8

共 19 条

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