Grantee Research Project Results
Mechanistic Studies of Isoprene and Aromatic Hydrocarbons
EPA Grant Number: R824789Title: Mechanistic Studies of Isoprene and Aromatic Hydrocarbons
Investigators: Jeffries, Harvey E.
Institution: University of North Carolina at Chapel Hill
EPA Project Officer: Chung, Serena
Project Period: October 1, 1995 through September 30, 1998
Project Amount: $450,000
RFA: Air Pollutants (1995) RFA Text | Recipients Lists
Research Category: Air Quality and Air Toxics , Air
Description:
The primary purpose of this project is to advance fundamental knowledge of the kinetics and reaction mechanisms for the hydroxy radical and ozone oxidation of isoprene, aromatic hydrocarbons and their daughter products. Experiments will be conducted in three different types of reactors-indoor chamber, continuous stirred tank reactor, and outdoor chamber. New derivative methods, coupled with ion trap mass spectrometric detection, will be used to identify and detect airborne aldehyde, ketone and carboxylic acid products. The new analytical methods allow for measurement of multi-functional carbonyl compounds, which are often among the unidentified photooxidation products. As many of these products are not available commercially, they will be synthesized for use as standards and reactants. The results of this study will produce new observational and modeling data that will greatly expand knowledge of the detailed reaction processes and product production in the atmospheric oxidation of isoprene and aromatic hydrocarbons. These new data will permit the formulation of significantly more accurate photochemical reaction models for use in EPA policy decisions.Publications and Presentations:
Publications have been submitted on this project: View all 2 publications for this projectJournal Articles:
Journal Articles have been submitted on this project: View all 2 journal articles for this projectSupplemental Keywords:
air, ambient air, atmosphere, ozone, tropospheric, VOC, oxidants, organics, environmental chemistry, modeling, Atlantic coast, North Carolina, NC, Region 4., RFA, Scientific Discipline, Air, Toxics, Geographic Area, air toxics, Environmental Chemistry, State, HAPS, Atmospheric Sciences, tropospheric ozone, EPA Region, ambient air quality, region 4, monitoring, air pollutants, aldehydes, mass spectrometry, ketone, indoor chamber study, oxidation reactions, hydrocarbon, exposure and effects, ambient air, ozone, air sampling, chemical composition, photochemistry, chemical kinetics, atmospheric aerosols, continnous stirred tank reactor, isoprene, photochemical, hydrocarbons, mechanistic study, North Carolina (NC), chemical amalysisProgress and Final Reports:
The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.