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Ion chromatographic determination of phosphorus and tungsten in epoxidized soybean oil
Author(s) -
Quaglino Marino,
Bottazzini Nicola,
Querci Cecilia,
Ricci Marco,
Cavalli Silvano
Publication year - 1992
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/bf02637692
Subject(s) - tungsten , hydrogen peroxide , phosphorus , chemistry , phosphate , epoxidized soybean oil , ion exchange resin , soybean oil , ion , ion exchange , catalysis , ion chromatography , inorganic chemistry , ammonium , nuclear chemistry , chromatography , organic chemistry , biochemistry , raw material
Soybean oil has been epoxidized with hydrogen peroxide in the presence of catalytic amounts of trioctylmethyl‐ammonium tetra(diperoxotungsto)phosphate. A fast ion‐exchange chromatographic method with suppressed conductivity detection has been developed for determining residual contents of tungsten and phosphorus in the oil. Tungsten and phosphorus could be determined at concentrations of 66 and 11 ppm, respectively. At tungsten and phosphorus concentrations of 1000 and 50 ppm, measured repeatabilities were 1.3 and 1.5%, respectively.