MEASUREMENT OF PEROXIDE IN OILS BY CONTROLLED-POTENTIAL COULOMETRY USING A VAPOR-GROWN CARBON-FIBER ELECTRODE

被引:9
作者
UCHIYAMA, S [1 ]
SHIMAMOTO, M [1 ]
SUZUKI, S [1 ]
HAMAMOTO, O [1 ]
机构
[1] MITSUI ENGN & SHIPBLDG CO LTD,ICHIHARA,CHIBA 290,JAPAN
关键词
D O I
10.1002/elan.1140020315
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A small amount of a linoleic acid sample solution was dropped on a carbon fiber paste containing a mixture of acetic acid and methanol (1:1) saturated with potassium iodide. The present method needs no titration, and the only pretreatment needed for the sample is the dissolution of linoleic acid with an acetic acid—chloroform mixture (3:2). The complete electrolysis time of iodine produced by the reaction of iodide ion and peroxides was found to be 2–3 minutes. The results obtained by coulometry were in fairly good agreement with those obtained by conventional iodometry. Copyright © 1990 VCH Publishers, Inc.
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页码:259 / 261
页数:3
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