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Articles

Determination of styrene monomer migrating in foodstuffs from polystyrene food contact articles using HS-SPME-GC-MS/MS: Results from the Greek market

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Pages 415-427 | Received 22 Sep 2021, Accepted 04 Nov 2021, Published online: 16 Dec 2021
 

ABSTRACT

In this study, a sensitive, accurate and fast headspace – solid phase microextraction – gas chromatography – tandem mass spectrometry method (HS-SPME-GC-MS/MS) was developed and validated for the determination of styrene in various food matrices (mean recovery ranged from 90 to 116% with a relative standard deviation of ≤11%). The method was used for the determination of the concentration of styrene in 23 foodstuffs packed in polystyrene (PS) containers, as well as the levels of styrene migrating into various foods (water, milk, cheese or cream) from 14 tableware or kitchenware articles made of styrene plastics. All samples were collected from the Greek market in 2020. Styrene concentrations in the packaged foods ranged from 0.4 to 160 ng g−1 with the highest concentration found in a meat product packed in a foamed PS tray. It is worth noting that 56% of PS packaged dairy products and desserts had a styrene concentration higher than 10 ng g−1. Particularly high levels of styrene that have not previously been reported, up to 46 ng g−1, were found in dairy products for children. The highest level of styrene migration from tableware or kitchenware articles, 89 ng g−1, was observed when disposable cups from foamed PS were filled with milk at 70℃ for 2 hours. The implications of these findings for the assessment of the potential exposure of the Greek consumers to styrene migrating from PS food contact materials are discussed.

Acknowledgments

The authors wish to thank Nicoletta Stavrouli, chemist PhD (General Chemical State Laboratory), for her contribution to the collection of the samples from the market and to their initial identification and classification.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

The author(s) reported there is no funding associated with the work featured in this article.

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