Desorption Isotherms for Poly- and Perfluoroalkyl Substances in Soil Collected from an Aqueous Film-Forming Foam Source Area

2022 ◽  
Vol 148 (1) ◽  
Author(s):  
Charles E. Schaefer ◽  
Dung Nguyen ◽  
Emerson Christie ◽  
Stefanie Shea ◽  
Christopher P. Higgins ◽  
...  
Keyword(s):  
Source Area ◽  
Perfluoroalkyl Substances ◽  
Film Forming ◽  
Desorption Isotherms

Electrochemical treatment of poly- and perfluoroalkyl substances in brines

2020 ◽  
Vol 6 (10) ◽  
pp. 2704-2712
Author(s):  
Charles E. Schaefer ◽  
Danielle Tran ◽  
Yida Fang ◽  
Youn Jeong Choi ◽  
Christopher P. Higgins ◽  
...  
Keyword(s):  
Electrochemical Oxidation ◽  
Anodic Oxidation ◽  
Electrochemical Treatment ◽  
Perfluoroalkyl Substances ◽  
Indirect Oxidation ◽  
Bench Scale ◽  
Film Forming

Bench-scale experiments were performed to evaluate the electrochemical oxidation, via direct anodic oxidation and indirect oxidation from salt-derived species, of diluted aqueous film forming foam (AFFF) in brine solutions.

Aqueous film forming foam and associated perfluoroalkyl substances inhibit methane production and Co-contaminant degradation in an anaerobic microbial community

2019 ◽  
Vol 21 (11) ◽  
pp. 1915-1925 ◽  
Author(s):  
Nicole J. M. Fitzgerald ◽  
Hanna R. Temme ◽  
Matt F. Simcik ◽  
Paige J. Novak
Keyword(s):  
Microbial Community ◽  
Methane Production ◽  
Perfluoroalkyl Substances ◽  
Contaminant Degradation ◽  
Film Forming ◽  
Anaerobic Microbial Community

This work determines the components of aqueous film forming foam responsible for disrupting microbial community functions.

Desorption of Poly- and Perfluoroalkyl Substances from Soil Historically Impacted with Aqueous Film-Forming Foam

2021 ◽  
Vol 147 (2) ◽  
pp. 06020006
Author(s):  
Charles E. Schaefer ◽  
Dung Nguyen ◽  
Emerson Christie ◽  
Stefanie Shea ◽  
Christopher P. Higgins ◽  
...  
Keyword(s):  
Perfluoroalkyl Substances ◽  
Film Forming

Clean Electron Microscope Substrate Films Used for Micrometeorite Collection and Study

1967 ◽  
Vol 25 ◽  
pp. 366-367
Author(s):  
D. M. Davies ◽  
R. Kemner ◽  
E. F. Fullam
Keyword(s):  
Thin Film ◽  
Electron Microscope ◽  
High Altitude ◽  
Amyl Acetate ◽  
Temperature Variations ◽  
Film Forming ◽  
Film Specimen ◽  
Particulate Contaminants

All serious electron microscopists at one time or another have been concerned with the cleanliness and freedom from artifacts of thin film specimen support substrates. This is particularly important where there are relatively few particles of a sample to be found for study, as in the case of micrometeorite collections. For the deposition of such celestial garbage through the use of balloons, rockets, and aircraft, the thin film substrates must have not only all the attributes necessary for use in the electron microscope, but also be able to withstand rather wide temperature variations at high altitude, vibration and shock inherent in the collection vehicle's operation and occasionally an unscheduled violent landing.Nitrocellulose has been selected as a film forming material that meets these requirements yet lends itself to a relatively simple clean-up procedure to remove particulate contaminants. A 1% nitrocellulose solution is prepared by dissolving “Parlodion” in redistilled amyl acetate from which all moisture has been removed.

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