title: Determination of perfluorocompounds in popcorn packaging by pressurised liquid extraction and ultra-performance liquid chromatography-tandem mass spectrometry.
abstract: The development and characterisation of a method based on reverse-phase ultra-performance liquid chromatography (UPLC) coupled to a quadrupole-time of flight mass spectrometer (Q-TOF-MS) with negative electrospray ionisation (ESI) to determine perfluorinated compounds (PFCs) in packaging is presented in this paper. Analytes were quantitatively recovered from packaging with methanol in only one PLE cycle of 6 min at 100 °C. The UPLC allowed the successful separation of the studied PFCs in less than 4 min. The whole method presented good precision, with RSDs below 8%, LODs from 0.6 to 16 ng g(-1); and excellent recovery values, around 100% in all cases, were achieved. The PLE-UPLC-MS method was applied to the analysis of popcorn packaging for microwave cooking. Besides the most commonly studied PFCs: PFOA and PFOS, the presence of other perfluorocarboxylic acids (PFCAs) in popcorn packaging is evidenced in this work.
authors.affiliation: Department of Chemistry, University of La Rioja, C/Madre de Dios 51, E-26006 Logroño (La Rioja), Spain.
authors.forename: María Pilar
authors.initials: MP
authors.lastname: Martínez-Moral
authors.forename: María Teresa
authors.initials: MT
authors.lastname: Tena
mesh_terms: D002853:Chromatography, Liquid / Q000379:methods*; D005466:Fluorocarbons / Q000032:analysis*; D018857:Food Packaging; D057230:Limit of Detection; D015203:Reproducibility of Results; D053719:Tandem Mass Spectrometry / Q000379:methods*; D003313:Zea mays
chemical_list: D005466:Fluorocarbons