Sequential flow-injection spectrophotometric determination of iron(II) and iron(III) by copper(II)-catalyzed reaction with Tiron

被引：0

作者：

M. Endo

Shigeki Abe

机构：

[1] Department of Material Science and Engineering,

[2] Yamagata University,undefined

[3] 4-3-16 Jonan,undefined

[4] J-992 Yonezawa,undefined

[5] Japan,undefined

来源：

Fresenius' Journal of Analytical Chemistry | 1997年 / 358卷

关键词：

Oxidation; Iron; Copper; Reaction Kinetic; Flow Injection;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A flow injection method for the sequential determination of iron(II) and iron(III) was developed. It is based on the differential reaction kinetics of iron(II) and iron(III) with Tiron in a double-injection FI system. The proposed method employs the accelerating action of copper(II) for the oxidation of iron(II) in the presence of Tiron. A linear calibration graph is obtained for iron (II) and iron(III) in the concentration range 1.8 × 10–5– 1.8 × 10–4 mol/L; the throughput of samples is 30 injections/h.

引用

页码：546 / 547

页数：1