Micro-solid phase extraction method for analyzing PFAS in water

Murtadha, Batool

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https://hdl.handle.net/2142/109904 Copy

Description

Title

Micro-solid phase extraction method for analyzing PFAS in water

Author(s)

Murtadha, Batool

Issue Date

2021-04-27

Keyword(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.

Series/Report Name or Number

2021 Emerging Contaminants in the Environment Conference (ECEC21)

Type of Resource

• text
• still image

Language

en

Permalink

• http://hdl.handle.net/2142/109904
• https://youtu.be/dnnREAfEfF8

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