Measurement of peroxide in oils by controlled-potential coulometry using a vapor-grown carbon fiber electrode
✍ Scribed by Shunichi Uchiyama; Miwa Shimamoto; Shuichi Suzuki; Osamu Hamamoto
- Publisher
- John Wiley and Sons
- Year
- 1990
- Tongue
- English
- Weight
- 303 KB
- Volume
- 2
- Category
- Article
- ISSN
- 1040-0397
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✦ Synopsis
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.