Component Analysis of the Commercial Metal Extractant, Cyanex 302®, by GC-MS

The composition of the commercial reagent Cyanex 302® was investigated by GC-MS. Mass spectrometric studies allowed us to confirm that bis(2,4,4-trimethylpentyl)monothiophosphinic acid is the major compound and that a considerable amount of tris(2,4,4-trimethylpentyl)phosphine oxide is also present....

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Bibliographic Details
Published in:Analytical Sciences 2002, Vol.18(2), pp.141-146
Main Authors: MENOYO, Begoña, ELIZALDE, María P.
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
Chromatographic methods and physical methods associated with chromatography
Exact sciences and technology
Gas chromatographic methods
Mass spectra
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Summary:The composition of the commercial reagent Cyanex 302® was investigated by GC-MS. Mass spectrometric studies allowed us to confirm that bis(2,4,4-trimethylpentyl)monothiophosphinic acid is the major compound and that a considerable amount of tris(2,4,4-trimethylpentyl)phosphine oxide is also present. The study also revealed that the extractant has three minor components. These were identified as bis(2,4,4-trimethylpentyl)phosphinic acid, bis(2,4,4- trimethylpentyl)phosphine oxide and bis(2,4,4-trimethylpentyl)dithiophosphinic acid. The mass spectra of these compounds are discussed and some fragmentation processes are postulated.
ISSN:0910-6340
1348-2246
DOI:10.2116/analsci.18.141