RAPID MEASUREMENT OF AQUEOUS HYDROXYL RADICAL CONCENTRATIONS IN STEADY-STATE HO FLUX SYSTEMS

被引：24

作者：

IRELAND, JC ^{[1
]}

VALINIEKS, J ^{[1
]}

机构：

[1] RIGA TECH UNIV,FAC CHEM TECHNOL,RIGA,LATVIA,USSR

来源：

CHEMOSPHERE | 1992年 / 25卷 / 03期

关键词：

HYDROXYL RADICAL; 4-POBN; ADVANCED OXIDATION; CAPILLARY ELECTROPHORESIS; GC MS;

D O I：

10.1016/0045-6535(92)90555-6

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The spin-trap compound alpha-(4-pyridyl-1-oxide)-N-tert-butyl-nitrone (4-POBN) is utilized for the detection and quantitation of the hydroxyl radical (HO.) in aqueous solution. Capillary electrophoresis enables rapid analysis of the probe compound. The thermally unstable HO. radical adduct of 4-POBN can be unequivocally identified by gas chromatography / mass spectrometry analysis of it's pentafluorobenzyl ether. The minimum steady-state flux of HO. is determined in several 'advanced oxidation systems" including photo-Fenton, ozone, and titanium dioxide based radical generators.

引用

页码：383 / 396

页数：14

共 24 条

[1] MASS-SPECTROMETRIC DETERMINATION OF SPIN ADDUCTS OF HYDROXYL AND ARYL FREE-RADICALS [J].