Prevalence and Implications of Per- and Polyfluoroalkyl Substances (PFAS) in Settled Dust

First Evidence of Prenatal Exposure to Emerging Poly- and Perfluoroalkyl Substances Associated with E-Waste Dismantling: Chemical Structure-Based Placental Transfer and Health Risks

“…In addition, 18% (17 out of 94) individuals had higher maternal serum concentrations of 4:2 FTSA (C6) than PFHxS (C6). The simultaneous occurrence of PFOS and 6:2 FTSA as well as PFHxS and 4:2 FTSA was reported in paired indoor dust and carpets, 35,36 indicating co-exposure of legacy and emerging PFAS. A previous study also reported that 6:2 FTSA had higher cytotoxicity than PFOS in human liver HL-7702 cell line.…”

Use and release of per- and polyfluoroalkyl substances (PFASs) in consumer food packaging in U.S. and Canada

“…However, it is the low intentional use of PFASs in food packaging ($2% of the total food packaging) that leads to the largest releases of PFASs, and highlights hotspots/blindspots for the sound management of food packaging. 95,96 These results, specically the low percentage ($2%) of food packaging with intentionally added PFASs, lend support to regulatory initiatives to eliminate the use of PFASs in food packaging in seven U.S. states, 67 the voluntary agreement brokered between the food packaging industry and the U.S. FDA to restrict which PFAS can be used in food packaging, 37 and initiatives among several European countries to restrict nonessential uses of PFAS. [97][98][99] We question whether these initiatives would be able to control ows of PFASs from nonintentional introduction to food packaging in these jurisdictions.…”

“…However, it is the low intentional use of PFASs in food packaging (∼2% of the total food packaging) that leads to the largest releases of PFASs, and highlights hotspots/blindspots for the sound management of food packaging. 95,96…”

Evaluation of iodide chemical ionization mass spectrometry for gas and aerosol-phase per- and polyfluoroalkyl substances (PFAS) analysis

“…Finally, many of the aforementioned PFAS, as well as polyuoroalkyl phosphoric acid diesters (diPAPs), peruorophosphonates (PFPAs), and peruorophosphinates (PFPIAs), have been measured in indoor dust. 16,17,[28][29][30][31][32] diPAPs have been shown to also be PFAA precursors, as atmospheric photooxidation on mineral dust can transform these compounds to PFCAs. 33 Given the wide variety of PFAS present in the atmosphere, as well as the limitations of offline methods, an online method for PFAS monitoring in gases and aerosols would be highly valuable for better characterization of atmospheric inputs, uxes, transport, and transformations of PFAS.…”

“…Finally, many of the aforementioned PFAS, as well as polyfluoroalkyl phosphoric acid diesters (diPAPs), perfluorophosphonates (PFPAs), and perfluorophosphinates (PFPIAs), have been measured in indoor dust. 16,17,28–32 diPAPs have been shown to also be PFAA precursors, as atmospheric photooxidation on mineral dust can transform these compounds to PFCAs. 33…”