Trans-Pacific and regional atmospheric transport of semivolatile organic compounds to Mt. Bachelor Observatory, U.S.A. from Spring 2004 to Spring 2006

ENVR 178

Toby Primbs, Department of Chemistry, Oregon State University, 1007 ALS Bldg, Corvallis, OR 97331, Staci L. Simonich, staci.simonich@oregonstate.edu, Departments of Chemistry and Environmental and Molecular Toxicology, Oregon State University, 1007 ALS Hall, Corvallis, OR 97331, Glenn Wilson, Environmental and Molecular Toxicology, Oregon State University, 1007 ALS Hall, Corvallis, OR 97331, Dan Jaffe, University of Washington-Bothell, 18115 Campus Way NE, Bothell, WA, and Carol Higginbotham, Department of Science, Central Oregon Community College, 209 Ochoco, 2600 NW College Way, Bend, OR 97701.
Anthropogenic semivolatile organic pollutants (SOCs) undergo long-range atmospheric transport to the Western U.S. from global and Eurasian sources as well as regional atmospheric transport from North American sources. High elevation sites in the Western U.S. may be in the free troposphere more often than lower elevation sites and allow for more conclusive identification of trans-Pacific transport events to the Western U.S. High volume air sampling (~644 m3 for 24-hour periods) of anthropogenic SOCs was conducted at Mt. Bachelor Observatory (MBO) (43.98°N, 121.69°W, 2.7 km a.s.l.) from April 2004 to May 2006. The presence of 81 SOCs was investigated in the 69 air samples collected. Air trajectories were calculated using data from NOAA's HYSPLIT to assess potential source region influences. Differences in SOC compositions between long-range and regional atmospheric transport events were investigated.
 

Symposium Honoring Dr. Walter Giger
6:00 PM-8:00 PM, Wednesday, August 22, 2007 BCEC -- Exhibit Hall - B2, Poster

Sci-Mix
8:00 PM-10:00 PM, Monday, August 20, 2007 BCEC -- Exhibit Hall - B2, Sci-Mix

Division of Environmental Chemistry

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007