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Title: Determination of phthalic acid esters in drinking water and olive oil by ultra-high performance liquid chromatography-electrospray-tandem mass spectrometry: Study of phthalate migration from plastic bottles to drinking water at different domestic exposure conditions
Author: Pardo-Mates, Naiara
Serrano, Francesca
Núñez Burcio, Oscar
Keywords: Envasament d'aliments
Contaminació dels aliments
Espectrometria de masses
Oli d'oliva
Aigües minerals
Food packaging
Food contamination
Mass spectrometry
Olive oil
Mineral waters
Issue Date: 23-Dec-2017
Publisher: Research Trends
Abstract: A UHPLC-ESI-MS/MS method for the determination of ten phthalates in mineral water and olive oil samples was developed. A hold-back column placed between pump and injection valve allowed preventing phthalate instrumental background contamination. Good instrumental limits of detection (1-9 µg/L), precisions (RSD <23.9%), and trueness (relative error <20%) were achieved. A migration study from PET bottles into mineral water at different domestic exposure conditions revealed than only diethyl phthalate migrated when exposed at 40 oC although at not-quantified levels up to six months of exposure. No matrix effect was present for mineral waters and only dicyclohexyl phthalate was detected. Matrix-matched calibration was proposed for the analysis of olive oils due to the huge matrix-effect encountered with the employed liquid-liquid extraction method. Among the multiple positives detected in olive oil samples, only dibutyl phthalate was found in one sample at the established EU specific migration level (0.3 mg/kg).
It is part of: Trends in Chromatography, 2017, vol. 11, p. 27-48
ISSN: 0972-8635
Appears in Collections:Articles publicats en revistes (Enginyeria Química i Química Analítica)

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