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From the first issue of 2016, Chromatography has changed its name to Separations.

Open AccessArticle
Chromatography 2015, 2(3), 452-471; doi:10.3390/chromatography2030452

Field-Amplified Sample Injection-Micellar Electrokinetic Chromatography for the Determination of Benzophenones in Food Simulants

1
Department of Analytical Chemistry, University of Barcelona, Martí i Franquès 1-11, E08028 Barcelona, Spain
2
Serra Húnter Program, Generalitat de Catalunya, Rambla de Catalunya 19-21, E08007 Barcelona, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Timothy G. Strein
Received: 15 June 2015 / Revised: 13 July 2015 / Accepted: 14 July 2015 / Published: 20 July 2015
(This article belongs to the Special Issue Electrophoretic Analyses in Capillaries and Microfluidic Devices)
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Abstract

A field-amplified sample injection-micellar electrokinetic chromatography (FASI-MEKC) method for the determination of 14 benzophenones (BPs) in a food simulant used in migration studies of food packaging materials was developed, allowing almost baseline separation in less than 21 min. The use of a 10 mM sodium dodecyl sulfate (SDS) solution as sample matrix was mandatory to achieve FASI enhancement of the analyzed BPs. A 21- to 784-fold sensitivity enhancement was achieved with FASI-MEKC, obtaining limits of detection down to 5.1–68.4 µg/L, with acceptable run-to-run precisions (RSD values lower than 22.3%) and accuracy (relative errors lower than 21.0%). Method performance was evaluated by quantifying BPs in the food simulant spiked at 500 µg/L (bellow the established specific migration limit for BP (600 µg/L) by EU legislation). For a 95% confidence level, no statistical differences were observed between found and spiked concentrations (probability at the confidence level, p value, of 0.55), showing that the proposed FASI-MEKC method is suitable for the analysis of BPs in food packaging migration studies at the levels established by EU legislation. View Full-Text
Keywords: field-amplified sample injection; micellar electrokinetic chromatography; benzophenones; migration studies; food simulants field-amplified sample injection; micellar electrokinetic chromatography; benzophenones; migration studies; food simulants
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Félez, C.; Molet, A.; Núñez, O. Field-Amplified Sample Injection-Micellar Electrokinetic Chromatography for the Determination of Benzophenones in Food Simulants. Chromatography 2015, 2, 452-471.

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