Félez, CristinaMolet, AnnaNúñez Burcio, Oscar2015-09-182015-09-182015-07-202227-9075https://hdl.handle.net/2445/66944A 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<br>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.20 p.application/pdfengcc-by (c) Félez, Cristina et al., 2015http://creativecommons.org/licenses/by/3.0/esCromatografiaEnvasament d'alimentsChromatographyFood packaginginfo:eu-repo/semantics/article6537332015-09-18info:eu-repo/semantics/openAccess