Showing 1321-1335 of 1831
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Per- and polyfluoroalkyl substances (PFASs) in Chinese drinking water: risk assessment and geographical distribution
Science
11 Jan 2021 | Environ. Sci. Eur.
The PFAS concentrations reported in more than 20% of the studied cities, likely affecting 98.5 million people, were above the maximum contaminant level issued by Vermont in 2019.
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Chemours can skip testing 54 ‘forever chemicals,’ EPA says
News
8 Jan 2021 | Bloomberg Law Review
The EPA has rejected a request from six North Carolina environmental health groups to force Chemours Co. to generate toxicity, human health, and other data for dozens of toxic PFAS chemicals.
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Removal of per- and polyfluoroalkyl substances from aqueous media using synthesized silver nanocomposite-activated carbons
Science
7 Jan 2021 | J Environ Health Sci Eng
Silver-based compounds were effective for the removal of PFAS from aqueous media and are good alternatives to commercially available activated carbons.
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Current Contributions of Organofluorine Compounds to the Agrochemical Industry
Science
6 Jan 2021 | iScience
A database of 424 fluoro-agrochemicals was developed to better understand the role of PFAS in agriculture.
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Per- and polyfluoroalkyl substances and their alternatives in black-tailed gull (Larus crassirostris) eggs from South Korea islands during 2012-2018
Science
6 Jan 2021 | J Hazard Mater
Significant increasing temporal trends were observed for PFOS, PFNA, and F-53B suggesting continuous use or accumulation of these in the Korean environment.
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Contamination Characteristics and Potential Ecological Risks of Typical Perfluoroalkyl Substances in the Water and Sediment of Coastal Tourism Resorts in Shandong Province
Science
5 Jan 2021 | Huan Jing Ke Xue .
Discharge of municipal industrial wastewater and domestic sewage is the main source of contamination around tourist-heavy areas.
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High levels of fluoroalkyl substances and potential disruption of thyroid hormones in three gull species from South Western France
Science
5 Jan 2021 | Sci Total Environ
Elevated levels of PFAS in seabirds are potentially associated with thyroid issues.
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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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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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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.