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Food Addit Contam Part B Surveill. 2019 Sep;12(3):191-198. doi: 10.1080/19393210.2019.1592238. Epub 2019 Apr 4.

PFOA and PFOS levels in microwave paper packaging between 2005 and 2018.

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Polymer and Food Protection Consortium, Department of Food Science and Human Nutrition, Iowa State University , Ames , IA , USA.
Department of Statistics, Iowa State University , Ames , IA , USA.
Department of Chemistry, Iowa State University , Ames , IA , USA.
Department of Food Science and Human Nutrition, Iowa State University , Ames , IA , USA.


Per- and polyfluoroalkyl substances are synthetic environmental pollutants previously used for packaging applications as a grease, oil, and water-resistant coating. Exposure reported in previous studies highlighting potential concerns with public health. This study evaluated performance of coated paper packaging used for microwave popcorn, snacks, and sandwich bags for presence of perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS). Current paper packaging materials: seven popcorn bags and three snack and sandwich bags were analysed for PFOA and PFOS and compared to concentrations in microwave popcorn bags between 2005 and 2018. Only two microwave popcorn bags had average PFOA content above the limit of quantitation of 5.11 ng g-1 paper. All other sample types had PFOA and PFOS values below the limit of detection (LOD) of 1.53 and 0.63 ng g-1 paper, respectively. Results of this study follow trends from 2005 to 2018 suggesting a reduction in PFOS and PFOA concentrations in microwave packaging.


PFAS; PFOS; Perfluorinated compounds; food packaging; perfluorooctane sulfonate; perfluorooctanoic acid; persistent organic pollutant

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