RT info:eu-repo/semantics/article
T1 Determination of polymer additive residues that migrate from coffee capsules by means of stir bar sorptive extraction-gas chromatography-mass spectrometry and PARAFAC decomposition
A1 Valverde Som, Lucía
A1 Reguera Alonso, Celia
A1 Herrero Gutiérrez, Ana
A1 Sarabia Peinador, Luis Antonio
A1 Ortiz Fernández, Mª Cruz
K1 Plastic additive residues
K1 Coffee
K1 Twister
K1 SBSE-GC–MS
K1 PARAFAC
K1 Migration
K1 Química analítica
K1 Chemistry, Analytic
AB 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.
PB Elsevier
SN 2214-2894
YR 2021
FD 2021-06
LK http://hdl.handle.net/10259/6163
UL http://hdl.handle.net/10259/6163
LA eng
NO 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.
DS Repositorio Institucional de la Universidad de Burgos
RD 25-abr-2024