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Reactive Spectro-microscopy Studies of Substrate-Deposited of Organic Aerosol Particles


EMSL Project ID
30494

Abstract

This project seeks to characterize the chemical and
morphological changes of individual atmospheric particles during chemical transformations.
Chemical transformations include oxidation of these particles with atmospheric trace gases
followed by water uptake. The exact mechanisms of these reactions are poorly understood;
specifically, what species are formed at the surface and their dependence upon the type and
structure of the aerosol particles. This project will utilize a quantitative approach for reactive
spectro-microscopy studies of organic aerosols using a combination of micro-FTIR spectroscopy
and environmental scanning electron microscopy (ESEM)

Project Details

Project type
Large-Scale EMSL Research
Start Date
2008-10-01
End Date
2011-09-30
Status
Closed

Team

Principal Investigator

Alexei Tivanski
Institution
University of Iowa

Team Members

Suman Ghorai
Institution
University of Iowa

Jameson Keck
Institution
University of Iowa

Paul Gassman
Institution
Pacific Northwest National Laboratory

Alexander Laskin
Institution
Purdue University

Related Publications

Ghorai S, A Laskin, and AV Tivanski. 2011. "Spectroscopic Evidence of Keto-enol Tautomerism in Deliquesced Malonic Acid Particles." Journal of Physical Chemistry A 115(17):4373-4380. doi:10.1021/jp112360x