Showing 61-75 of 433
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Solvay provides contested PFAS reference standard
News
16 Jun 2021 | C&EN
Earlier this year, Solvay used patent infringement claims to demand that the standard maker Wellington Laboratories stop selling C6O4, effectively halting the research because Wellington was the only commercial source.
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Exploring the integrity of targeted PFASs in extracted wastewater samples during transport and storage stages
Science
16 Jun 2021 | Chemosphere
The integrity of PFAS containing environmental samples during shipping and handling was evaluated.
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Trends in environmental chemical concentrations in the Canadian population: Biomonitoring data from the Canadian Health Measures Survey 2007-2017
Science
16 Jun 2021 | Environ Int
Concentrations of PFOA and PFOS decreased over a ten-year period in the Canadian population.
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[Op-Ed] Cosmetic chemicals need a makeover
News
15 Jun 2021 | The Hill
Every morning millions of people — primarily women — start their day with makeup. In doing so, they may be slathering Teflon and other harmful “forever chemicals” all over their faces.
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Legacy and emerging per- and polyfluoroalkyl substances (PFAS) in sediments from the East China Sea and the Yellow Sea: Occurrence, source apportionment and environmental risk assessment
Science
9 Jun 2021 | Chemosphere
PFOA was predominant and HFPO-DA concentration was comparable to PFOS with PBSA and HFPO-DA found for the first time in sediment.
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Air monitoring with passive samplers for perfluoroalkane substances in developing countries (2017-2019)
Science
9 Jun 2021 | Chemosphere
41 developing countries were sampled, with Zambia showing exceptionally high levels of PFAS.
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Detection of ultrashort-chain and other per- and polyfluoroalkyl substances (PFAS) in U.S. bottled water
Science
2 Jun 2021 | Water Research
Ultrashort-chain perfluoropropanoic acid (PFPrA) comprised 42% of PFAS mass.
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Assessment of exposure to perfluoroalkyl substances (PFASs) in dogs by fur analysis
Science
2 Jun 2021 | Environ Pollut
Six PFAS were detected in canine fur with PFOA and PFBuA at the highest levels.
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Limit PFAS in bottled water, US senators tell the FDA
Policy
1 Jun 2021
Eleven US Senators are asking the US FDA to set a federal limit on PFAS allowable in bottled water.
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Concentrations and human exposure assessment of per and polyfluoroalkyl substances in farmed marine shellfish in South Africa
Science
1 Jun 2021 | Chemosphere
Short-chain PFAS were more prevalent than long-chain PFAS in farmed shellfish.
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Heterogeneous photooxidation of 6:2 polyfluoroalkyl phosphoric acid diester on dust mineral components under simulated sunlight and the influence of relative humidity and oxygen
Science
1 Jun 2021 | Chemosphere
DiPAP may account for additional PFCA sources in both indoor and outdoor environments and the heterogeneous degradation pathways were different from those of volatile fluorotelomer alcohols.
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Unsaturated PFOS and Other PFASs in Human Serum and Drinking Water from an AFFF-Impacted Community.
Science
31 May 2021 | Environ Sci Technol
PFAS exposure levels decreased over time for all PFAS except PFPeS.
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‘Forever chemicals’ found in home fertilizer made from sewage sludge
News
28 May 2021 | The Guardian
Sewage sludge that wastewater treatment districts across America package and sell as home fertilizer contain alarming levels of toxic PFAS, also known as “forever chemicals”, a new report has revealed.
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High Levels of Legacy and Emerging Contaminants in Killer Whales (Orcinus orca) from Norway, 2015 to 2017
Science
26 May 2021 | Environ Toxicol Chem
PFAS was found in higher levels in adult orcas than offspring, suggesting less efficient maternal transfer.
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Source allocation of per- and polyfluoroalkyl substances (PFAS) with supervised machine learning: Classification performance and the role of feature selection in an expanded dataset
Science
24 May 2021 | Chemosphere
Supervised machine learning based on composition can identify patterns that can be used to distinguish PFAS sources.