Application of an Activated Carbon-Based Support for Magnetic Solid Phase Extraction Followed by Spectrophotometric Determination of Tartrazine in Commercial Beverages

A method is presented for magnetic solid phase extraction of tartrazine from nonalcoholic beverages. The method involves the extraction and clean-up by activated carbon covered with magnetite dispersed in the sample, followed by the magnetic isolation and desorption of the analyte by basified methan...

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Bibliographic Details
Published inInternational Journal of Analytical Chemistry Vol. 2015; no. 2015; pp. 134 - 141
Main Authors Miranda, Jose M., Guevara-Lara, Alfredo, Escamilla-Lara, Karen A., Rodríguez, José A., Páez-Hernández, Ma. Elena
Format Journal Article
LanguageEnglish
Published Cairo, Egypt Hindawi Limiteds 01.01.2015
Hindawi Publishing Corporation
Hindawi Limited
Subjects
Activated carbon
Analytical chemistry
Beverages
Chromatography
Dyes
Food
Magnetic fields
Methods
Solids
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Summary:A method is presented for magnetic solid phase extraction of tartrazine from nonalcoholic beverages. The method involves the extraction and clean-up by activated carbon covered with magnetite dispersed in the sample, followed by the magnetic isolation and desorption of the analyte by basified methanol. The tartrazine eluted from the magnetic support was determined by spectrophotometry. Under optimal conditions, the linear range of the calibration curve ranges from 3 to 30 mg L−1, with a limit of detection of 1 mg L−1. The method was validated by comparing the results with those obtained by HPLC. A precision of < 5.0% was obtained in all cases and no significant differences were observed ( P < 0.05 ) .
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Academic Editor: Faezeh Khalilian
ISSN:1687-8760
1687-8779
DOI:10.1155/2015/291827