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Title:Micro-solid phase extraction method for analyzing PFAS in water
Author(s):Murtadha, Batool
Subject(s):per- and polyfluoroalkyl substances
PFAS
Abstract:Presented by: Batool Murtadha – Graduate Student at George Mason Univeristy Co-authors: Songjing Yan, Upal Ghosh, and Gregory Foster Abstract: Per- and polyfluoroalkyl substances (PFAS) have been under investigation for environmental and public health risks since being detected at parts-per-million concentrations in groundwater at installations using firefighting foams. Our project is focused on developing passive equilibrium sampling technology using customized polymeric materials to measure PFAS in natural waters, by characterize the isotherm behavior of individual PFAS, and develop a reliable solid phase extraction (SPE) microanalysis of PFAS in water. Our analysis is being conducted using 3 mL custom packed SPE cartridges containing 50 mg of Strata PFAS WAX / 12 mg of graphitized carbon black (GCB) sorbents. Water (100 mL) is extracted and the eluents (0.5 mL of MeOH + 0.3% NH4OH) are eluted into 2 mL autosampler vials without the need for solvent volume reduction. The method has yield recoveries of 24 PFAS from water ranging from 41% Perfluorotridecanoic acid to 91% Perfluorononane sulfonic acid. Surrogate recoveries perfluoro-n-[1,2-13C2]hexanoic acid, perfluoro-n-[1,2-13C2]decanoic acid and N-deuterioethylperfluoro-1-octanesulfonamidoacetic acid were 103%, 83% and 89%. The optimized micro-solid phase extraction method is capable of measuring the PFAS concentration and has given an efficient and firm result, plus a cost-effective and saves time. Further, this method will be used for studying surface and pore water samples. Biography: Batool was born in Iraq and raised in Ohio. A first-year Ph.D. student researching in Dr. Gregory Foster’s lab in environmental chemistry. She did earn her bachelor’s degree in 2016 from Walsh University in chemistry. she finished her master’s degree in chemistry in 2020 from the university of Dayton. Her master’s thesis researched in organic chemistry area about the development of a new synthesis of organophosphate that controls its stereochemistry.
Issue Date:2021-04-27
Series/Report:2021 Emerging Contaminants in the Environment Conference (ECEC21)
Genre:Presentation / Lecture / Speech
Conference Paper / Presentation
Type:Text
Image
Language:English
URI:http://hdl.handle.net/2142/109904
https://youtu.be/dnnREAfEfF8
Date Available in IDEALS:2021-04-26


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