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oai:riubu.ubu.es:10259/61632022-11-24T11:57:09Zcom_10259_4249com_10259_5086com_10259_2604com_10259_3843com_10259_3591com_10259.4_106com_10259_6164com_10259_4534col_10259_6165col_10259_4250col_10259_6162

Valverde Som, Lucía Reguera Alonso, Celia Herrero Gutiérrez, Ana Sarabia Peinador, Luis Antonio Ortiz Fernández, Mª Cruz 2021-11-17T08:50:29Z 2021-11-17T08:50:29Z 2021-06 2214-2894 http://hdl.handle.net/10259/6163 10.1016/j.fpsl.2021.100664 This paper reports on the difficulties encountered when developing an analytical method for ultra-trace determination, in a complex matrix, of plastic additive residues which are ubiquitous in the laboratory. The simultaneous qualitative and quantitative determination of an antioxidant (2,6-di-tert-butyl-4-methyl-phenol, BHT), an UV stabilizer (benzophenone, BP), and a plasticizer (diisobutyl phthalate, DiBP), released from plastic capsules is carried out in coffee by means of GC–MS and parallel factor analysis decomposition. Stir bar sorptive extraction is used to extract and concentrate the analytes. Coffee samples are prepared with Milli-Q water, which contains residues of the target compounds, which can be significant for ultra-trace analysis and should be subtracted. In addition, matrix effect exits in coffee, so standard addition method is used. The residue concentrations released from the coffee capsules into the solid coffee are around 3, 1, and 12 μg kg−1 of BHT, BP and DiBP, respectively. Spanish MINECO (AEI/FEDER, UE) through project CTQ2017-88894-R and by Consejería de la Junta de Castilla y León through project BU052P20 (both co-financed with European FEDER funds). L. Valverde-Som thanks JCyL for her postdoctoral contract through BU052P20 project. eng Elsevier Food Packaging and Shelf Life. 2021, V. 28, 100664 https://doi.org/10.1016/j.fpsl.2021.100664 info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTQ2017-88894-R/ES/NUEVAS HERRAMIENTAS QUIMIOMETRICAS CON VARIABLES LATENTES PARA LA TOMA DE DECISIONES EN TECNOLOGIA ANALITICA DE PROCESOS Y EN CONTEXTOS REGULADOS DE SEGURIDAD ALIMENTARIA info:eu-repo/grantAgreement/Junta de Castilla y León//BU052P20//Nuevos desarrollos metodológicos del diseño de experimentos para análisis químicos, bioquímicos y en tecnología analítica de procesos Attribution-NonCommercial-NoDerivatives 4.0 Internacional http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Plastic additive residues Coffee Twister SBSE-GC–MS PARAFAC Migration Química analítica Chemistry, Analytic Determination of polymer additive residues that migrate from coffee capsules by means of stir bar sorptive extraction-gas chromatography-mass spectrometry and PARAFAC decomposition info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion