HR: 1340h
AN: A53C-1366    [Abstracts]
TI: Observations of Hydrogen Peroxide (H2O2) and Methylhydroperoxide (CH3OOH) at Mt. Bachelor Observatory During the Spring-Summer 2007
AU: * George, K M
EM: kmg7119@sru.edu
AF: Department of Geography, Geology, and the Environment Slippery Rock University, 339 Advanced Science and Technology Hall, Slippery Rock, PA 16057, United States
AU: Snow, J A
EM: julie.snow@sru.edu
AF: Department of Geography, Geology, and the Environment Slippery Rock University, 339 Advanced Science and Technology Hall, Slippery Rock, PA 16057, United States
AU: O'Sullivan, D W
EM: osulliva@usna.edu
AF: Department of Chemistry United States Naval Academy, 572 Holloway Road, Annapolis, MD 21402, United States
AB: Observations of hydrogen peroxide (H₂O₂) and methylhydroperoxide (CH₃OOH) were made at Mt. Bachelor Observatory (MBO), Oregon, during the summer 2007. H₂O₂ and CH₃OOH, primary HO_x precursors, were measured in order to constrain the sources and sinks of mercury. Prior to constraining mercury observations, the relationship between peroxide levels and meteorological measurements at MBO were investigated. Ambient peroxides were collected using continuous flow glass scrubbing coils, then analyzed with enzyme fluorescence techniques. Prior to analysis, H₂O₂ was separated from organic peroxides using High Performance Liquid Chromatography with a C-18 column. Preliminary results show peroxide variability is linked to diurnal, wind direction, and local air quality changes. Local fires were present during the later portion of the intensive study and allowed extensive sampling of peroxides during biomass burning events.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0325 Evolution of the atmosphere (1610, 8125)
DE: 0345 Pollution: urban and regional (0305, 0478, 4251)
DE: 0365 Troposphere: composition and chemistry
DE: 0368 Troposphere: constituent transport and chemistry
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting