%0 Journal Article %J Environ Sci Technol %D 2009 %T Trans-Pacific and regional atmospheric transport of polycyclic aromatic hydrocarbons and pesticides in biomass burning emissions to western North America. %A Genualdi, Susan A %A Killin, Robert K %A Woods, Jim %A Schmedding, David %A Staci M Simonich %K Air %K Air Pollutants %K Atmosphere %K Biomass %K Fires %K Motion %K North America %K Pacific Ocean %K Pesticides %K Polycyclic Aromatic Hydrocarbons %K Satellite Communications %K Siberia %K Soil %K Trees %X

The trans-Pacific and regional North American atmospheric transport of polycyclic aromatic hydrocarbons (PAHs) and pesticides in biomass burning emissions was measured in air masses from April to September 2003 at two remote sites in western North America. Mary's Peak Observatory (MPO) is located in Oregon's Coast Range and Cheeka Peak Observatory (CPO) is located on the tip of the Olympic Peninsula in Washington State. During this time period, both remote sites were influenced by PAH and pesticide emissions from forest fires in Siberia and regional fires in Oregon and Washington State. Concurrent samples were taken at both sites on June 2 and August 4, 2003. On these dates, CPO had elevated gas phase PAH, alpha-hexachlorocyclohexane, and retene concentrations (p < 0.05) and MPO had elevated retene, particulate phase PAH, and levoglucosan concentrations due to trans-Pacific transport of emissions from fires in Siberia. In addition, during the April to September 2003 sampling period, CPO and MPO were influenced by emissions from regional fires that resulted in elevated levoglucosan, dacthal, endosulfan, and gas phase PAH concentrations. Burned and unburned forest soil samples collected from the regional forest fire area showed that 34-100% of the pesticide mass was lost from soil due to burning. These data suggest that the trans-Pacific and regional atmospheric transport of biomass burning emissions results in elevated PAH and pesticide concentrations in western North America. The elevated pesticide concentrations are likely due to re-emission of historically deposited pesticides from the soil and vegetation during the fire event.

%B Environ Sci Technol %V 43 %P 1061-6 %8 2009 Feb 15 %G eng %N 4 %R 10.1021/es802163c %0 Audiovisual Material %D 2007 %T Trans-Pacific and Regional Atmospheric Transport of Anthropogenic Semivolatile Organic Compounds to Mt. Bachelor, USA from Spring 2004 to Spring 2006 %A Primbs, T %A Staci M Simonich %A Glenn R Wilson %A Jaffe, D %A Higginbotham, C. %B American Chemical Society, Boston, MA %8 08/2007 %G eng %0 Audiovisual Material %D 2006 %T Trans-Pacific and Regional Atmospheric Transport of Anthropogenic Semivolatile Organic Compounds to Mt. Bachelor Observatory, USA from Spring 2004 to Spring 2006 %A Primbs, T %A Staci M Simonich %A Glenn R Wilson %A Jaffe, D %A Higginbotham, C. %B American Geophysical Union Meeting, San Francisco, CA %8 12/2006 %G eng %0 Audiovisual Material %D 2006 %T Trans-Pacific Atmospheric Transport of PBTs from Asia to the Pacific Northwest of the USA in Spring 2004 %A Primbs, T %A Schmedding, D %A Glenn R Wilson %A Higginbotham, C. %A Staci M Simonich %B American Chemical Society, San Francisco, CA %8 09/2006 %G eng %0 Generic %D 2006 %T Trans-Pacific Atmospheric Transport of PBTs from Asia to the Pacific Northwest of the USA in Spring 2004 %A Primbs, T %A Schmedding, D %A Glenn R Wilson %A Higginbotham, C. %A Staci M Simonich %B American Chemical Society, San Francisco, CA %8 09/2006 %G eng %0 Journal Article %J Environ Sci Technol %D 2005 %T Trace analysis of semivolatile organic compounds in large volume samples of snow, lake water, and groundwater. %A Usenko, Sascha %A Hageman, Kimberly J %A Schmedding, Dave W %A Staci M Simonich %K Chemistry Techniques, Analytical %K Environmental Monitoring %K Organic Chemicals %K Pesticides %K Snow %K Soil Pollutants %K Solubility %K Volatilization %K Water %K Water Pollutants, Chemical %X

An analytical method was developed for the trace analysis of a wide range of semivolatile organic compounds (SOCs) in 50-L high-elevation snow and lake water samples. The method was validated for 75 SOCs from seven different chemical classes (polycyclic aromatic hydrocarbons, organochlorine pesticides, amides, triazines, polychlorinated biphenyls, thiocarbamates, and phosphorothioates) that covered a wide range of physical-chemical properties including 7 orders of magnitude of octanol-water partition coefficient (log K(ow) = 1.4-8.3). The SOCs were extracted using a hydrophobically and hydrophilically modified divinylbenzene solid-phase extraction device (modified Speedisk). The average analyte recovery from 50 L of reverse osmosis water, using the modified Speedisk, was 99% with an average relative standard deviation of 4.8%. Snow samples were collected from the field, melted, and extracted using the modified Speedisk and a poly(tetrafluoroethylene) remote sample adapter in the laboratory. Lake water was sampled, filtered, and extracted in situ using an Infiltrex 100 fitted with a 1-microm glass fiber filter to trap particulate matter and the modified Speedisk to trap dissolved SOCs. The extracts were analyzed by gas chromatographic mass spectrometry with electron impact ionization and electron capture negative ionization using isotope dilution and selective ion monitoring. Estimated method detection limits for snow and lake water ranged from 0.2 to 125 pg/L and 0.5-400 pg/L, respectively. U.S. historic and current-use pesticides were identified and quantified in snow and lake water samples collected from Rocky Mountain National Park, CO. The application of the analytical method to the analysis of SOCs in large-volume groundwater samples is also shown.

%B Environ Sci Technol %V 39 %P 6006-15 %8 2005 Aug 15 %G eng %N 16 %R 10.1021/es0506511 %0 Audiovisual Material %D 2005 %T Trans-Pacific Atmospheric Transport of Persistent Organic Pollutants and Other Anthropogenic Semi-Volatile Organic Compounds to a High Elevation Site in the Pacific Northwest, USA %A Primbs, T %A Schmedding, D %A Glenn R Wilson %A Higginbotham, C. %A Staci M Simonich %B DIOXIN, Toronto, Canada %8 08/2005 %G eng %0 Generic %D 2005 %T Trans-Pacific Atmospheric Transport of Persistent Organic Pollutants and Other Anthropogenic Semi-Volatile Organic Compounds to a High Elevation Site in the Pacific Northwest, USA %A Primbs, T %A Schmedding, D %A Glenn R Wilson %A Higginbotham, C. %A Staci M Simonich %B DIOXIN %8 08/2005 %G eng %0 Audiovisual Material %D 2004 %T TransPacific and Regional Atmospheric Transport of Anthropogenic SemiVolatile Organic Compounds to Cheeka Peak Observatory During the Spring of 2002 %A Killin, R %A Staci M Simonich %A Jaffe, D %A DeForest, C L %A Glenn R Wilson %B American Geophysical Union Meeting, San Francisco, CA %8 12/2004 %G eng