@article {308,
	title = {Nonpolymeric Per- and Polyfluoroalkyl Substances (PFAS) and Side-Chain Fluorinated Polymers in Canadian Building Products.},
	journal = {Environ Sci Technol},
	year = {2025},
	month = {2025 Sep 17},
	abstract = {<p>To understand if exterior building products are a source of perfluoroalkyl and polyfluoroalkyl substances (PFAS) to the environment, we measured PFAS in 145 samples of paints, sealers, and textiles, mostly intended for exterior use. We first developed a combined one and two-dimensional diffusion-ordered spectroscopy (1D and 2D-DOSY) fluorine nuclear magnetic resonance (F NMR) method to characterize and quantify side-chain fluorinated polymers (SCFPs) and nonpolymeric PFAS. Results showed that 36\% (22/61), 24\% (13/54), and 70\% (21/30) of tested paints, sealers, and textiles contained total organic fluorine (TOF) at 0.1-16.1, 0.4-2488, and 0.34-74.0 μmol/g, respectively. Paints mainly contained 6:2 fluorotelomer (FT) and aromatic-CF nonpolymeric PFAS, while sealers also contained 6:2 FT SCFPs and perfluorobutane sulfonyl fluoride (PBSF)-based PFAS. Textiles contained 6:2 FT, 8:2 FT, and PBSF-based PFAS indicative of SCFPs. Advanced mass spectrometry methods revealed that paints and sealers with 6:2 FT nonpolymers mainly contained 6:2 fluorotelomer phosphate mono-, di-, and triesters (6:2 mono-, di-, and triPAPs) and 6:2 FT dipyrophosphate, while textiles primarily contained n:2 fluorotelomer alcohols (n:2 FTOH, n = 6, 8) or -methyl perfluorobutane sulfonamide alcohol (MeFBSE). Based on the PFAS found in these products and the recommendation to reapply the coatings to protect exterior/interior surfaces and the replacement of exterior textiles, these results indicate that building products likely contribute polymeric and nonpolymeric PFAS to the environment.</p>},
	issn = {1520-5851},
	doi = {10.1021/acs.est.5c07012},
	author = {Liu, Min and Xia, Chunjie and Peng, Hui and Zvereva, Elizaveta and Burns, Darcy C and Fontaine, Justine and Blum, Arlene and Spentzos, Ariana Z and Wang, Zhanyun and Peaslee, Graham F and Sauv{\'e}, S{\'e}bastien and Venier, Marta and Diamond, Miriam L}
}
