INDIRECT SPECTROPHOTOMETRIC DETERMINATION OF HYDROGEN-PEROXIDE

被引：4

作者：

AFSAR, H

DEMIRATA, B

机构：

[1] ISTANBUL TECH UNIV,FAC SCI & ART,DEPT CHEM,MASLAK 80626,TURKEY

[2] YILDIZ TECH UNIV,FAC SCI,DEPT CHEM,SISLI 80270,TURKEY

来源：

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 1993年 / 347卷 / 10-11期

关键词：

D O I：

10.1007/BF00635476

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A method for the indirect spectrophotometric determination of H2O2 is based on its oxidation with chlorine in basic medium and measurement of the unreacted Cl2 by the colour reaction with o-tolidine at 438 nm. The effective molar absorptivity for H2O2 with o-tolidine is 5.37 x 10(4) mol-1 cm-1 at pH 1.7. The lower limit of determination is 1.85 x 10(-7) mol/l or 6.29 ppb. Br-, I-, NO2-, Pb2+ and Sn2+ interfere even in small amounts, but are not present in commercial H2O2.

引用

页码：460 / 461

页数：2