Reagent for the high-performance liquid chromatography determination of peroxycarboxylic acids

被引：19

作者：

Effkemann, S ^{[1
]}

Karst, U ^{[1
]}

机构：

[1] Westfalische Wilhelms Universitat, Inst Anorgan Chem, Abt Analyt Chem, D-48149 Munster, Germany

来源：

ANALYST | 1998年 / 123卷 / 08期

关键词：

peroxycarboxylic acids; peroxides; derivatisation; high-performance liquid chromatography;

D O I：

10.1039/a801697f

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The synthesis and application of a new thiomethoxy-functionalised azo compound for the determination of peroxycarboxylic acids is described. 2-[(3-{2-[4-Amino-2-(methylsulfanyl}phenyl]-1- diazenyl)phenyl)sulfonyl]-1-ethanol reacts selectively with peroxycarboxylic acids in the presence of a large excess of hydrogen peroxide to yield the corresponding sulfoxide. Sulfide and sulfoxide are separated easily using reversed phase HPLC. An important advantage of the new reagent is the absorption maximum of the sulfoxide at wavelengths higher than 400 nm. The cross selectivity towards colored matrix components in real samples is therefore minimised. The method is characterised by an applicable concentration range over more than two decades and low cross reactivity towards hydrogen peroxide and potassium persulfate. External calibration with the respective sulfoxide leads to accurate and reliable results.

引用

页码：1761 / 1765

页数：5

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