Flow injection kinetic spectrophotometric determination of ascorbic acid based on an inhibiting effect

被引：25

作者：

Fan, J ^{[1
]}

Ye, CL ^{[1
]}

Feng, SL ^{[1
]}

Zhang, G ^{[1
]}

Wang, JJ ^{[1
]}

机构：

[1] Henan Normal Univ, Dept Chem, Xinxiang 453002, Henan, Peoples R China

来源：

TALANTA | 1999年 / 50卷 / 04期

关键词：

flow injection; kinetic spectrophotometric method; ascorbic acid; rhodamine; 6G;

D O I：

10.1016/S0039-9140(99)00183-6

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A rapid and sensitive flow-injection kinetic spectrophotometric method is proposed for the determination of ascorbic acid. The procedure is based on the inhibiting effect of ascorbic acid on the enhancing effect of oxalate on the potassium dichromate-potassium iodide/rhodamine 6G system. The detection limit and linear ranges are 0.08 and 0.10-4.00 mu g/ml, respectively. The relative standard deviation of 11 replicate measurements is less than 2.0%. This method has been successfully used to determine ascorbic acid in pharmaceuticals, tomatoes and oranges. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：893 / 898

页数：6

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