SPECTROPHOTOMETRIC METHOD FOR ASCORBIC-ACID USING DICHLOROPHENOLINDOPHENOL - ELIMINATION OF THE INTERFERENCE DUE TO IRON

被引：54

作者：

DAVIES, SHR ^{[1
]}

MASTEN, SJ ^{[1
]}

机构：

[1] UNIV MELBOURNE,SCH CHEM,PARKVILLE,VIC 3052,AUSTRALIA

来源：

ANALYTICA CHIMICA ACTA | 1991年 / 248卷 / 01期

关键词：

SPECTROPHOTOMETRY; ASCORBIC ACID;

D O I：

10.1016/S0003-2670(00)80888-0

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A modified spectrophotometric procedure for the determination of ascorbic acid using dichlorophenolindophenol (DCPIP) is described. The method is simple, sensitive and rapid, and the reagents required are relatively inexpensive. The Fe(II) interference encountered when the previous method was used is greatly reduced by adding EDTA. The presence of up to 400-mu-M Fe [as Fe(II) or Fe(III)] has no effect on the ascorbic acid determination. By raising the pH at which the determination is made, the stability of DCPIP dye has been improved.

引用

页码：225 / 227

页数：3

共 8 条

[1] THE ROLE OF OXALATE IN ACCELERATING THE REDUCTIVE DISSOLUTION OF HEMATITE (ALPHA-FE2O3) BY ASCORBATE [J].