University of Illinois Urbana-Champaign

PFAS in a seepage lake sediment core: insights into atmospheric deposition of PFAS

McClung, Samantha

Content Files
McClung_Samantha_ECEC24.pdf

Permalink

https://hdl.handle.net/2142/122948

Description

Title
PFAS in a seepage lake sediment core: insights into atmospheric deposition of PFAS
Author(s)
McClung, Samantha
Issue Date
2024-04-24
Keyword(s)
  • PFAS
  • per- and polyfluoroalkyl substances
Date of Ingest
2024-05-02T11:21:50-05:00
Abstract
Per- and polyfluoroalkyl substances (PFAS) are a large family of persistent contaminants with diverse and poorly characterized sources. Our understanding of their environmental cycling is improving, but is still quite limited. The presence of PFAS in environmental media (e.g., sediments, surface water, ice) from remote areas has revealed significant gaps in our understanding of the sources, fate, and transport of PFAS. In particular, the importance of atmospheric transport of PFAS as a pathway into surface hydrologic systems is poorly understood. To investigate the role of atmospheric deposition as a source of PFAS to lake sediments in the Great Lakes region, a sediment core from Loaine lake–a secluded Minnesota lake with primarily atmospheric inputs–was dated and analyzed for 37 target PFAS. This presentation will share initial results from this seepage lake sediment core, which is one component of a larger effort to constrain PFAS wet-deposition (rain and snow) across the Great Lakes. In this larger effort, wet deposition and lake sediment samples from across the Great Lakes will be used to investigate the relative importance and tracers of atmospherically deposited PFAS. The core presented here represents an atmospheric end-member for this larger work.
Has Part
https://youtu.be/K2kvSyOlNzM
Type of Resource
  • still image
  • text
Language
eng

Owning Collections

2024 Emerging Contaminants in the Environment Conference (ECEC24) PRIMARY