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A simple method for estimating carbonyl content in peroxide‐containing oils
Author(s) -
Chiba Toshiyuki,
Takazawa Makiko,
Fujimoto Kenshiro
Publication year - 1989
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02636182
Subject(s) - phosphine , chemistry , peroxide , phosphine oxide , hydrazone , organic chemistry , catalysis
A simple method is described for the estimation of carbonyl content in peroxide‐containing oils. In this method, peroxides, which interfere with carbonyl determination, are reduced with triphenyl phosphine prior to carbonyl determination. Carbonyl content is measured by a colorimetric 2,4‐dinitrophenyl hydrazone procedure. Neither triphenyl phosphine nor triphenyl phosphine oxide, oxidation products of triphenyl phosphine by reaction with peroxides, interfere with the measurement of carbonyl content. The method is applicable to several kinds of oxidized oils in any oxidation stage.