Premium
Chemiluminescence of the peroxomonosulphate–cobalt(II)–aliphatic monocarboxylic acids system
Author(s) -
Wang Min,
Zhao Lixia,
Lin JinMing
Publication year - 2007
Publication title -
luminescence
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.428
H-Index - 45
eISSN - 1522-7243
pISSN - 1522-7235
DOI - 10.1002/bio.960
Subject(s) - chemistry , chemiluminescence , cobalt , singlet oxygen , valeric acid , formic acid , decomposition , oxygen , inorganic chemistry , photochemistry , organic chemistry , butyric acid
A weak chemiluminescence (CL) emission was observed due to the production of singlet oxygen ( 1 O 2 ) during the decomposition of peroxomonosulphate (HSO 5 − ) catalysed by cobalt(II). Low molecular mass aliphatic monocarboxylic acids, such as formic, acetic, propionic, butyric and valeric acids, influenced the CL emission, and the reaction of aliphatic monocarboxylic acids with HSO 5 − /Co 2+ solution was further investigated using a flow injection analysis (FIA) CL method. The results indicated that the CL intensities of aliphatic monocarboxylic acids were improved with increase in the carbon chain length in the potassium peroxomonosulphate–cobalt(II) sulphate system. Generation of singlet oxygen was confirmed by the fact that the CL emission of aliphatic monocarboxylic acids with the HSO 5 − /Co 2+ solution was quenched by NaN 3 , and from the CL spectrum of the reaction system. Additionally, a possible mechanism of aliphatic monocarboxylic acids CL emission enhancement was proposed. Copyright © 2007 John Wiley & Sons, Ltd.