A new method for analysis of sunset yellow in food samples based on cloud point extraction prior to spectrophotometric determination

A simple new micelle mediated preconcentration method was developed for analysis of sunset yellow (SY) prior to its spectrophotometric determination. The method was based upon cloud point extraction of the ion associate of SY and trioctylamine (TOA) in HCl–Triton X-100. In the surfactant phase the S...

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Published inJournal of industrial and engineering chemistry (Seoul, Korea) Vol. 19; no. 2; pp. 529 - 535
Main Authors El-Shahawi, M.S., Hamza, A., Al-Sibaai, A.A., Bashammakh, A.S., Al-Saidi, H.M.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 25.03.2013
한국공업화학회
Subjects
Chemical equilibria
Clouds
Constants
Extraction
Food stuffs
Foods
Isotherms
Micelle-mediated cloud point extraction
Sorption isotherm
Spectrophotometry
Sunset
Sunset yellow
Thermodynamics
Trioctylamine
화학공학
Micelle-mediated cloud point extraction
Thermodynamics
Food stuffs
Sunset yellow
Chemical equilibria
Sorption isotherm
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Summary:A simple new micelle mediated preconcentration method was developed for analysis of sunset yellow (SY) prior to its spectrophotometric determination. The method was based upon cloud point extraction of the ion associate of SY and trioctylamine (TOA) in HCl–Triton X-100. In the surfactant phase the SY species react with TOA yielding hydrophobic ion associate of SY−·TOA+. The distribution coefficient of SY between surfactant-rich phase and aqueous phase was approximately 104. Validation was tested by comparing the results with standard HPLC. Isotherm and thermodynamic parameters, chemical equilibrium, extraction constants and stiochiometry of the associate were assigned.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
G704-000711.2013.19.2.006
ISSN:1226-086X
1876-794X
DOI:10.1016/j.jiec.2012.09.008