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Remediation of atrazine in irrigation runoff by a constructed wetland

Creator:: Runes, Heather B.
Abstract:: Due to its frequent use in agriculture and its frequent detection in surface water, atrazine was chosen as a model compound to study the treatment capability of a surface flow wetland used to remediate irrigation runoff at a container nursery near Portland, Oregon. Further evaluation of treatment of atrazine was...
Resource Type:: Dissertation
Full Text:: would also like to thank my advisor, Dr. Jeffrey Jenkins. Jeff and I spent many long, hot days working

Hemoglobin adducts of the organophosphate insecticide azinphos-methyl

Creator:: Bailey, Bonnie J.
Abstract:: Reported here is an investigation to determine if azinphos-methyl (AZM), an organophosphate insecticide, adducts to hemoglobin, and if so, whether the hemoglobin adduct could be used as a quantitative marker of occupational AZM exposure. We hypothesized that AZM, or a metabolite of AZM, binds to hemoglobin in erythrocytes forming an...
Resource Type:: Dissertation
Full Text:: , acetonitrile, ethyl acetate, dimethyl sulfoxide >250, n-heptane 1.2, xylene 170 (all in g/L, 20 °C). AZM is

Total exposure profiles of azinphosmethyl and azinphosmethyl-oxon to orchard workers in the Pacific Northwest

Creator:: Moate, Thomas F.
Resource Type:: Masters Thesis
Full Text:: Bayer, Kansas City, MO. 1.0 g neat azm (Guthion) 99.7% purity and 0.5 g neat azm-o 95% purity

Biochemical and physiological indicators of behavioral impairment in salmonids exposed to chlorpyrifos and copper

Creator:: Sandahl, Jason
Abstract:: The purpose of this work was to determine if environmentally-relevant concentrations of chlorpyrifos and copper, two commonly detected chemicals in Western surface waters, can negatively impact the biological health of salmonids. Both compounds are highly neurotoxic to fish, but each with distinct biological target sites and mechanisms of action. We...
Resource Type:: Dissertation
Full Text:: I thank my mentor, Jeffrey Jenkins, for his efforts in shaping my development as a scientist, and

A Multi-Tiered Approach Using Daphnia magna to Assess Chlorpyrifos Risk to Aquatic Receptors

Creator:: Maggio, Stephanie A.
Abstract:: Chlorpyrifos (CPF) is a widely used broad-spectrum organophosphate insecticide. Following exposures, CPF and its more toxic oxon metabolite (CPFO) elicit neurotoxic effects by inhibiting the activity of the acetylcholinesterase enzyme (AChE), resulting in altered fitness and death at high doses. Following exposure, organisms bioactivate CPF to CPFO through the Cytochrome...
Resource Type:: Dissertation
Full Text:: Jeffrey J. Jenkins Chlorpyrifos (CPF) is a widely used broad-spectrum organophosphate insecticide

A novel apparatus for estimating pesticide volatility from spray droplets

Creator:: Poel, Jeff D.
Resource Type:: Masters Thesis
Full Text:: through which it is falling (Lip), droplet diameter (d), gas viscosity (Ti), and gravity (g) (Clift, 1978

Continuous monitoring and modeling to assess pesticide exposure in critical habitat for Pacific salmonids

Creator:: Janney, Philip K.
Abstract:: Pacific Northwest and California freshwater resources are key elements in the life history and ecology of Pacific salmon and steelhead listed as threatened or endangered under the Endangered Species Act. Risk to listed Pacific salmonid species can be assessed by evaluating the spatial and temporal co-occurrence of salmonid species at...
Resource Type:: Dissertation
Full Text:: . Abstract approved: ______________________________________________________ Jeffrey J. Jenkins

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:: FACTORS AFFECTING PESTICIDE VOLATILIZATION FROM TURFGRASS. Abstract approved Jeffrey J. Jenkins

Prenylated flavonoids from hops (Humulus lupulus) as monofunctional inducers of the carcinogen-detoxifying enzyme, NAD(P)H:quinone oxidoreductase

Creator:: Aponso, G. Lalith M.
Resource Type:: Masters Thesis
Full Text:: THESIS OF G. Lalith M. Aponso for the degree of Master of Science in Toxicology presented on April

Effects of esfenvalerate on native macroinvertebrates representative of Pacific Northwest streams

Creator:: Johnson, Katherine R.
Abstract:: Aquatic insects are essential components of healthy stream ecosystems, contributing to nutrient cycling, trophic dynamics and other ecological functions. Aquatic insect species, particularly those in the orders Ephemeroptera, Plecoptera and Trichoptera (EPT taxa) are however, extremely sensitive to insecticide contamination. Given that urban and agricultural use of synthetic pyrethroid insecticides...
Resource Type:: Dissertation
Full Text:: : _____________________________________________________________________ Paul C. Jepson Jeffrey J. Jenkins Aquatic insects are essential components of

ScholarsArchive@OSU

Remediation of atrazine in irrigation runoff by a constructed wetland

Hemoglobin adducts of the organophosphate insecticide azinphos-methyl

Total exposure profiles of azinphosmethyl and azinphosmethyl-oxon to orchard workers in the Pacific Northwest

Biochemical and physiological indicators of behavioral impairment in salmonids exposed to chlorpyrifos and copper

A Multi-Tiered Approach Using Daphnia magna to Assess Chlorpyrifos Risk to Aquatic Receptors

A novel apparatus for estimating pesticide volatility from spray droplets

Continuous monitoring and modeling to assess pesticide exposure in critical habitat for Pacific salmonids

Chemical and environmental factors affecting pesticide volatilization from turfgrass

Prenylated flavonoids from hops (Humulus lupulus) as monofunctional inducers of the carcinogen-detoxifying enzyme, NAD(P)H:quinone oxidoreductase

Effects of esfenvalerate on native macroinvertebrates representative of Pacific Northwest streams

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