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  • Non-targeted screening of plastic-related chemicals in food collected in Montreal, Canada.

Non-targeted screening of plastic-related chemicals in food collected in Montreal, Canada.

Food chemistry (2020-05-15)
Lei Tian, Jingyun Zheng, Cindy Gates Goodyer, Stéphane Bayen
ABSTRACT

A non-targeted screening method based on ultrasound-assisted extraction followed by high-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (HPLC-QTOF-MS) was developed to screen for the presence of plastic-related chemicals (PRCs) in different types of food (fish, chicken, canned tuna, leafy vegetables, bread and butter). Eleven bisphenols were used as targeted compounds. Instrument linearity (r2 ≥0.98), inter-day precision (RSD ≤9.0%) as well as method detection limits (MDLs below 3.6 ng g-1) were satisfactory. Recoveries of the eleven bisphenols ranged from 76% to 122% among the different food matrices. The method was applied to food collected from Montreal, Canada in 2017-2018. The non-targeted screening approach identified a range of contaminants in different food matrices, including BPA, BPS, bis(2-ethylhexyl) adipate, dibutyl adipate, hexadecyl methacrylate and Irganox®1076. Further research is suggested to investigate the concentration of these PRCs, the consumption habits of average and specific populations and the potential routes of contamination.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
4,4′-(1-Phenylethylidene)bisphenol, 99%
Sigma-Aldrich
4,4′-Cyclohexylidenebisphenol, 98%
Sigma-Aldrich
Dibutyl adipate, 96%