Showing 601-615 of 1104
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Development of Per and Polyfluoroalkyl Substances (PFAS) Ecological Risk Based Screening Levels (RBSLs)
Science
5 Jan 2021 | Environ Toxicol Chem
PFNA, PFOS, PFOA, PFHxA, PFBS, and PFBA were evaluated and a risk-based screening level was developed for each.
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Per- and polyfluoroalkyl substances (PFASs) are positively associated with thyroid hormones in an arctic seabird
Science
5 Jan 2021 | Environ Toxicol Chem
PFAS exposure was thought to lead to biological changes in male and female avian species.
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Toxic effects and mechanisms of PFOA and its substitute GenX on the photosynthesis of Chlorella pyrenoidosa
Science
5 Jan 2021 | Sci Total Environ
Prolonged exposure to GenX lead to decreased ability to photosynthesize.
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Perfluorooctanesulfonic Acid Detection Using Molecularly Imprinted Polyaniline on a Paper Substrate
Science
4 Jan 2021 | Sensors (Basel)
A low-cost electrical paper sensor was developed to have excellent sensitivity and selectivity provides the potential for large-scale monitoring of wastewater.
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Much Still Unknown about PFAS Destruction and Disposal
Policy
1 Jan 2021
This guidance, published Dec. 18, 2020, highlights how much is still unknown about how to effectively remove these materials from the environment.
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Revisiting pesticide pollution: The case of fluorinated pesticides
Science
1 Jan 2021 | Environ. Pollut.
This review discusses how an increasing number of pesticides are fluorinated and calls for more research to address the safety of these chemicals.
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Spatial Trends of Anionic, Zwitterionic, and Cationic PFASs at an AFFF-Impacted Site
Science
29 Dec 2020 | Environ Sci Technol
Precursor compounds may create long-term sources of perfluoroalkyl acids, although many pathways remain unknown; precursor analysis is critical for PFAS fate and transport understanding.
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Understanding PFAAs exposure in a generalist seabird species breeding in the vicinity of a fluorochemical plant: influence of maternal transfer and diet
Science
29 Dec 2020 | Env. Poll.
PFOS, PFOA, PFDA and PFNA were detected in a seabird community with PFOS concentrations measured in some chicks surpassing the toxicity reference value calculated for top avian predators.
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Dual-Functional Phosphorene Nanocomposite Membranes for the Treatment of Perfluorinated Water: An Investigation of Perfluorooctanoic Acid Removal via Filtration Combined with Ultraviolet Irradiation or Oxygenation
Science
29 Dec 2020 | Membranes
The removal of PFOA accumulated on the membrane surface achieved 99% after the membranes were treated with ultraviolet light and liquid aerobic oxidation.
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Serum perfluoroalkyl substances in residents following long-term drinking water contamination from firefighting foam in Ronneby, Sweden.
Science
29 Dec 2020 | Environ Int
Serum PFHxS and PFOS levels were a hundredfold higher than the general population.
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Nonstick pans often don't note they use PFAS
News
28 Dec 2020 | NPR
A Michigan-based environmental group has found many nonstick pans are coated with a chemical from the PFAS family
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Deposition of PFAS 'forever chemicals' on Mt. Everest.
Science
28 Dec 2020 | Sci Total Environ
PFOS, PFOA, and PFHxA were found in Mt. Everest snow and the below-glacier watershed.
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Assessing the human health risks of per- and polyfluoroalkyl substances: A need for greater focus on their interactions as mixtures
Science
22 Dec 2020 | J Haz. Mat.
The combined effects or potential interactions of PFAS mixtures should be considered and integrated into toxicity assessment to obtain a realistic and more refined human health risk assessment.
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Sources, Fate, and Plant Uptake in Agricultural Systems of Per- and Polyfluoroalkyl Substances
Science
22 Dec 2020 | Emerging Contaminants
PFAS are readily taken up in some plants, particularly the shorter-chain PFAS, and can evoke metabolic responses and phytotoxic effects at high concentrations.
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Sorption behavior of 6:2 chlorinated polyfluorinated ether sulfonate (F-53B) on four kinds of nano-materials
Science
22 Dec 2020 | Sci Total Environ
F-53B was found to be removed most efficiently with surface modified nanoclay from electroplating wastewater.