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Surface and Bulk Characterization of Ambient Ultrafine Particles


EMSL Project ID
19850

Abstract

The ultrafine fraction of airborne particulate matter (UFP's - < 100 nm diameter) have been shown to cause significant oxidative stress and damage to mitochondrial membranes. Since this size fraction represents a very large surface area, and particulate matter first interacts with biological systems through its surface, elucidating the surface chemistry of these particles is essential. Recently, three of us a Central Washington University were awarded an NIH AREA grant to collect airborne UFP's in Seattle and Ellensburg, WA and attempt to correlate their surface composition with assays for reactive oxygen species generation and electron transport chain dysfunction. This proposal is a request for instrument time on the Quantum 2000 XPS and TOF-SIMS for surface analysis, and PIXE for bulk analysis of these particulates as a crucial component to our NIH funded project.

Project Details

Project type
Large-Scale EMSL Research
Start Date
2006-07-21
End Date
2009-09-30
Status
Closed

Team

Principal Investigator

Anne Johansen
Institution
Central Washington University

Team Members

Josephine Wells
Institution
Central Washington University

Tracy O'connell
Institution
Central Washington University

Justin Johnston
Institution
Central Washington University

Carin Thomas-Bradley
Institution
Central Washington University

Eric Bullock
Institution
Central Washington University