Per- and Polyfluoroalkyl Substances in Canadian Fast Food Packaging
نویسندگان
چکیده
A suite of analytical techniques was used to obtain a comprehensive picture per- and polyfluoroalkyl substances (PFAS) in selected Canadian food packaging for fast foods (n = 42). Particle-induced gamma ray emission spectroscopy revealed that 55% the samples contained <3580, 19% 3580–10 800, 26% > 10 800 ?g F/m2. The highest total F (1 010 000–1 300 000 F/m2) measured molded “compostable” bowls. Targeted analysis 8 with high 4–15 individual PFAS each sample, 6:2 fluorotelomer methacrylate (FTMAc) alcohol (FTOH) typically dominating. Up 34% fluorine released from after hydrolysis, indicating presence unknown precursors. Nontargeted detected 22 6 different groups, including degradation products FTOH. Results indicate use side-chain fluorinated polymers suggest these can release short-chain compounds ultimately be transformed toxicological concern. Analysis 2 years storage showed overall decreases consistent loss volatile such as FTMAc bowls represents regrettable substitution single-use plastic packaging.
منابع مشابه
Estimating Children’s Exposure to Per- and Polyfluoroalkyl Substances
.......................................................................................................... I Sammanfattning ............................................................................................. II Zusammenfassung.........................................................................................IV Contribution statement of Kerstin Winkens...............................
متن کاملPerfluoroalkyl and polyfluoroalkyl substances in consumer products
Perfluoroalkyl and polyfluoroalkyl substances (PFAS) are used in a wide range of products of all day life. Due to their toxicological potential, an emerging focus is directed towards their exposure to humans. This study investigated the PFAS load of consumer products in a broad perspective. Perfluoroalkyl sulfonic acids (C4, C6-C8, C10-PFSA), carboxylic acids (C4-C14-PFCA) and fluorotelomer alc...
متن کاملSource tracking and impact of per- and polyfluoroalkyl substances at Svalbard – FluorosImpact –
3
متن کاملNeutral polyfluoroalkyl substances in the global atmosphere.
Concentrations of neutral per- and polyfluoroalkyl substances (nPFAS) in the atmosphere are of interest because nPFAS are highly mobile percursors for perfluoroalkyl acids. Two calibration studies in Ontario, Canada and Costa Rica established the feasibility of using XAD 2-resin based passive air samplers (XAD-PAS) to reliably determine long term average air concentrations of nPFAS under temper...
متن کاملSampling and simultaneous determination of volatile per- and polyfluoroalkyl substances in wastewater treatment plant air and water
Volatile per- and polyfluoroalkyl substances (PFASs) are often used as precursors in the synthesis of nonvolatile PFASs. The volatile PFASs, which include the perfluoroalkyl iodides (PFAIs), fluorotelomer iodides (FTIs), fluorotelomer alcohols (FTOHs), fluorotelomer olefins (FTOs), fluorotelomer acrylates (FTACs), and fluorotelomer methacrylates (FTMACs), are often produced starting from the te...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Environmental Science and Technology Letters
سال: 2023
ISSN: ['2328-8930']
DOI: https://doi.org/10.1021/acs.estlett.2c00926