Advanced Stopped-in-Loop Flow Analysis with a Reagents-Merging Zones Technique for a Catalytic Successive Determination of Vanadium and Iron

被引：3

作者：

Quezada, Alejandro Ayala ^{[1
]}

Murakami, Hiroya ^{[1
]}

Teshima, Norio ^{[1
]}

Sakai, Tadao ^{[1
]}

Motomizu, Shoji ^{[1
]}

机构：

[1] Aichi Inst Technol, Dept Appl Chem, Toyota 4700392, Japan

来源：

ANALYTICAL SCIENCES | 2015年 / 31卷 / 10期

关键词：

Reagents-merging zones; stopped-in-loop flow analysis; spectrophotometry; vanadium; iron; catalytic reaction; drinking water; INJECTION SPECTROPHOTOMETRIC DETERMINATION; WATER SAMPLES; TRACE VANADIUM; NATURAL-WATERS; OXIDATION; IRON(III); OPTIMIZATION; BROMATE; SYSTEM; COPPER;

D O I：

10.2116/analsci.31.1099

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An advanced stopped-in-loop flow analysis (SELFA) is proposed for the catalytic determinations of vanadium and iron. The chemistry relies on a vanadium- or iron-catalyzed oxidative reaction of p-anisidine by bromate or hydrogen peroxide in the presence of an activator (Tiron or 1,10-phenanthlorine) to form a red dye (510 nm). Reagents for the vanadium- or iron-catalyzed reaction are well mixed by a reagents-merging zones technique. A sample solution is loaded together with well-mixed reagents into a loop in the SILFA configuration, followed by spectrophotometric detection. The advanced SILFA system provides a selective method for the trace determination of vanadium and iron.

引用

页码：1099 / 1103

页数：5

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