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Analysis of Organic Oligomers Forming Secondary Aerosol from Wood Combustion-Derived Phenols


EMSL Project ID
25615

Abstract

Aqueous reactions of phenols will be studied in the laboratory using well defined solutions over a range of conditions (e.g., phenol mixture, oxidant and pH) as surrogates for atmospheric drops. The kinetics of phenol loss will be determined using HPLC/UV. Rates of product formation, and the chemical/physical properties of the products, including oligomers, will be determined using our own conventional LC-MS, ATR-FTIR, and OC analysis on extracts of the experimental solutions. Results from the reaction kinetics and product studies will be parameterized so that the daytime and nighttime oxidation of aqueous phenols can be included in models efficiently and accurately. Critical to this project is analysis of samples using methods of high-resolution mass spectrometry hosted by EMSL/PNNL. High-Resolution MS detection of high MW compounds is pivotal for understanding of their chemical composition and physical properties of organic aerosols and their possible impact on atmosphere. The proposed research will apply state-of-the-art mass spectrometric approaches developed for large complex molecules (e.g. biomolecules and synthetic polymers) to interrogate chemical composition of phenol derived oligomers.

Project Details

Project type
Large-Scale EMSL Research
Start Date
2007-06-06
End Date
2008-06-19
Status
Closed

Team

Principal Investigator

Cort Anastasio
Institution
University of California, Davis

Team Members

Michael Kleeman
Institution
University of California, Davis

Ann Dillner
Institution
University of California, Davis

Peter Green
Institution
University of California, Davis

Yury Dessiaterik
Institution
Colorado State University

Julia Laskin
Institution
Purdue University

Alexander Laskin
Institution
Purdue University