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Determination of tin salts in fats
Author(s) -
Lowry Robert R.,
Tinsley Ian J.
Publication year - 1972
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/bf02628892
Subject(s) - tin , methanol , chemistry , fatty acid , ethyl acetate , chromatography , organic chemistry
Tin compounds in both the oxidation states of II and IV can be determined directly in the fat or oil, using a solution of pyrocatechol violet in ethyl acetate and methanol. This method provides a rapid estimation of tin in the range of 5–54 µg/g of fat with either solid or liquid samples. The stability of the color with respect to both oxidation states and the effects of fat and free fatty acid levels are discussed.