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Filtering by: Creator Simonich, Staci L. Massey Remove constraint Creator: Simonich, Staci L. Massey Committee Member Simonich, Staci Remove constraint Committee Member: Simonich, Staci

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  • Per- and Polyfluoroalkyl Substances: From Disposition on Consumer Products and Field Materials to Treatment of Contaminated Groundwater

    Creator:
    Robel, Alix E.
    Abstract:
    Per- and polyfluoroalkyl substances (PFAS) are an emerging chemical class of concern. Recently in the United States, Health Advisory Limits for two PFAS in drinking water were established for perfluorooctane sulfonate and perfluorooctanoate in drinking water (set to 70 ng/L combine concentration) by the EPA. Because of PFAS mobility, persistence,...
    Resource Type:
    Dissertation
    Full Text:
    Anderson, Dr. Staci Simonich, Dr. Lewis Semprini, and Dr. Susan Tilton for their assistance and support

  • Mercury distribution in sediments and uptake into an aquatic food web at Cottage Grove Reservoir, Oregon

    Creator:
    Morgans, Donna L.
    Abstract:
    The Cottage Grove Reservoir has been impacted by a point source (Black Butte Mine), where mercury mining and processing has occurred within its watershed from the 1890's to the late 1960's. Total mercury concentrations in surface sediments transect samples, core samples, tributary samples, and representative food web species were measured...
    Resource Type:
    Masters Thesis
    Full Text:
    thank my committee members (Cathy Neumann and Staci Simonich) for their valuable input. My special

  • Conversion of glucose to hydrogen gas by supercritical water in a microchannel reactor

    Creator:
    Goodwin, Aaron K.
    Abstract:
    Glucose was gasified in supercritical water within a microchannel reactor at 650°C – 750°C, and 250 bar to yield H2 rich gas with a low concentration of CO. The feed glucose concentration was 0.1 M. Two microchannel reactor configurations were tested at fluid residence times ranging from 0.5 sec to...
    Resource Type:
    Masters Thesis
    Full Text:
    : _____________________________________________________________________ Gregory L. Rorrer Glucose was gasified in supercritical water within a microchannel reactor

  • Long-term fertilizer input influences total and bioavailable metal in agricultural soils and crops

    Creator:
    Pérez, Angela L.
    Abstract:
    Protection of the quality and integrity of food supplies is of global concern. Crops can accumulate non-nutritive and sometimes toxic metals and metalloids. Accumulated metals/metalloids can come in part, from fertilizers, which may contain variable levels of non-nutritive metals or metalloids such as arsenic (As), cadmium (Cd), lead (Pb), nickel...
    Resource Type:
    Dissertation
    Full Text:
    stakeholder meetings. I am also grateful to my committee members Drs. Anne Fairbrother, Staci Simonich

  • Beyond the 16 EPA priority pollutant PAHs : environmental characterizations of oxygenated PAHs and dibenzopyrene isomers

    Creator:
    Layshock, Julie
    Abstract:
    Polycyclic aromatic hydrocarbons (PAHs) with a molecular weight (MW) of 302 and oxygenated-PAHs (OPAHs) have demonstrated toxicity beyond that of frequently monitored and known carcinogenic PAHs. Airborne particulate matter (PM) was characterized for MW 302 isomers to evaluate risk and air quality indices and OPAHs in order to fill data...
    Resource Type:
    Dissertation
    Full Text:
    † Simonich Massey, Staci †‡ and Anderson, Kim † † Environmental and Molecular Toxicology

  • Advancement of Passive Sampling Applications for Assessing Contaminant Transport, Bioaccumulation, and Toxicity

    Creator:
    Minick, David J.
    Abstract:
    In the environment, it is the unbound fraction of chemical (Cfree) which is able to diffuse across environmental interfaces and biological membranes. It is therefore Cfree which drives many important biological-environmental processes including contaminant transport, bioaccumulation and toxicity. Passive sampling devices (PSDs) offer a simplified and more accurate approach for...
    Resource Type:
    Dissertation
    Full Text:
    you have given me. A special thanks to my committee: Dr. Staci Simonich, Dr. Susan Tilton, Dr

  • Determination of fluorochemicals in waste-dominated aqueous systems

    Creator:
    Huset, Carin A.
    Abstract:
    While fluorochemicals have been detected all over the world and in wastewater treatment plants, the effect of wastewater effluent on the receiving waters has not been evaluated. In the first study, the mass flow of fluorochemicals emanating from wastewater treatment plants along the Glatt River in Switzerland was evaluated. The...
    Resource Type:
    Dissertation
    Full Text:
    , Vincent Remcho and Staci Simonich, for the support and guidance over the years. I would especially like

  • Conversion of biomass constituents to hydrogen-rich gas by supercritical water in a microchannel reactor

    Creator:
    Goodwin, Aaron K.
    Abstract:
    Microreactors offer high rates of heat transfer able to intensify highly endothermic biomass reforming reactions in supercritical water. In this study, two continuous flow microreactor configurations were used to gasify biomass constituents in supercritical water. The first reactor configuration was a micro diameter stainless steel or Hastelloy tube (508 µm...
    Resource Type:
    Dissertation
    Full Text:
    : _______________________________________________________________________ Gregory L. Rorrer Microreactors offer high rates of heat transfer able to intensify highly

  • Human Exposure to PAHs in Air, Water, and Crayfish

    Creator:
    Paulik, L. Blair
    Abstract:
    There are many links between exposure to environmental pollution and risks to human health. While advances in the fields of toxicology, exposure science, and environmental chemistry have shown light on many of these links, many more research challenges remain. One major challenge is how to accurately characterize the toxicity of...
    Resource Type:
    Dissertation
    Full Text:
    . Thank you to Dave Stone, Bill Stubblefield, Staci Simonich, Molly Kile, Anna Harding, and Perry Hystad

  • Chemical and environmental factors affecting pesticide volatilization from turfgrass

    Creator:
    Conway, Michael S.
    Abstract:
    Volatile loss rates of pesticides from turfgrass were measured using the Backward-Time Lagrangian Stochastic Dispersion model (Flesch et al., 1995). Solar radiation, ambient temperature, surface temperature, relative humidity, wind direction, and wind speed were monitored continuously. Growth regulator was applied to the turf plot several days before pesticide application to...
    Resource Type:
    Masters Thesis
    Full Text:
    plot for surface flux calculations. Dr. Staci Simonich, Dr. Kim Anderson, Mr. Rod Inman, Mr. Gene