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Partial chemical speciation techniques for aquatic humic-metal complexes

Creator:: Chase, Duane Scott
Resource Type:: Masters Thesis
Full Text:: . BACKGROUND Introduction The field of aquatic environmental trace metal (TM) chemistry has undergone a

The accumulation of cadmium, copper and nickel in freshwater mussels (Margaritifera margaritifera), algae (Cladophora sp.), and sediment from Elk Creek, Oregon

Creator:: Sigismondi, Linda A.
Abstract:: Concern about heavy metal pollution has increased during the past decade in which studies have shown that heavy metals are accumulating in the environment and that these metals, in excess, are toxic to organisms, including man. Because of this concern, scientists have suggested the use of indigenous organisms as monitors...
Resource Type:: Masters Thesis
Full Text:: . Measurements of metal levels in M. margaritifera and sediments have potential value in an environmental

Estuarine sediment controls on trace metal distributions

Creator:: Davies-Colley, Robert J.
Abstract:: Sediments are the major compartment in aquatic environments for many materials of toxic or nutrient concern. The lack of knowledge of the phase associations of toxic metals in sediments is the largest deficiency in our understanding of the environmental hazard posed by metal contamination. This study examined the sedimentary partitioning...
Resource Type:: Dissertation
Full Text:: understanding of the environmental hazard posed by metal contamination. This study examined the sedimentary

Estuarine sediment controls on trace metal distributions

Creator:: Davies-Colley, R. J., Nelson, Peter O., and Williamson, Kenneth J.
Resource Type:: Technical Report
Full Text:: understanding of the environmental hazard posed by metal contamination . In this study, the sedimentary

Multi-metal equilibrium sorption and transport modeling for copper, chromium, and arsenic in an iron oxide-coated sand, synthetic groundwater system

Creator:: Osathaphan, Khemarath
Abstract:: The mixed metal compound, Chromated Copper Arsenate, or CCA, has been widely used as a wood preservative. The metal ions in CCA, CrO²⁻₄, Cu²⁺, and AsO³⁻₄, have been found in contaminated surface and subsurface soils and groundwater nearby some wood preservative facilities and nearby wood structures. Iron oxides are a...
Resource Type:: Dissertation
Full Text:: ), "Chemistry of Metal Retention by Soils," Environmental Science and Technology, Vol. 23, pp.1046-1055. Hayes

Remediation of heavy-metal contaminated soils using succinic acid

Creator:: Kaul, Arvind
Abstract:: Succinic acid, a low molecular weight dicarboxylic acid was used to leach out heavy metals from Willamette Valley soil (contaminated separately with lead, copper, and zinc) in form of water-soluble organo-metal complexes. The research tasks included developing synthetic contaminated soils representative of those found at Superfund sites and making heavy...
Resource Type:: Masters Thesis
Full Text:: Remediation of Heavy-Metal Contaminated Soils Using

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:: Department of Environmental Quality (ODEQ) bird/mammal screening levels soil concentrations (mg metal

The assessment of copper and zinc removal from highway stormwater runoff using Apatite II™

Creator:: Huang, Hsiao-Wen
Abstract:: Copper and zinc are heavy metals commonly present in highway stormwater runoff. Discharge of these metals to surface waters inhabited by sensitive aquatic species including threatened and endangered salmonids has necessitated the need for improved treatment techniques. Although copper is of the greater toxicological concern, zinc is often present at...
Resource Type:: Masters Thesis
Full Text:: Environmental Engineering Dean of the Graduate School I understand that my thesis will become

Trace metal concentrations in the signal crayfish, Pacifastacus leniusculus (Decapoda: Astacidae), and the stonefly Pteronarcys californica (Plecoptera: Pteronarcyidae) along a downstream gradient of the Umatilla River

Creator:: Snyder, Jennifer L.
Abstract:: Metals are a persistent form of freshwater pollution and have been shown to bioaccumulate in aquatic macroinvertebrates through direct contact with contaminated water, sediments, and through consumption of contaminated organisms. This research explored the longitudinal bioaccumulation patterns of 5 common trace metals (Cr, Cu, Zn, Cd, and Pb) in the...
Resource Type:: Masters Thesis
Full Text:: environmental metal loads (such as textile manufacture, mills, etc.) are often more traceable and quantifiable

Distribution of bioavailable metals and a human health risk assessment from fish and crayfish in the lower Willamette River, Oregon

Creator:: Krissanakriangkrai, Oraphin
Abstract:: In this study the impact of episodic events on levels of bioavailable trace metals Zn, Cu, Cr, Cd, Pb, and As (III) were determined for the lower Willamette River in Oregon. In addition, a comparison among three alternative methods for estuary sampling was conducted. Potential adverse human health risk associated...
Resource Type:: Dissertation
Full Text:: . Higher metal concentrations coincided with higher precipitation. Elevated Cu and Pb concentrations

ScholarsArchive@OSU

Partial chemical speciation techniques for aquatic humic-metal complexes

The accumulation of cadmium, copper and nickel in freshwater mussels (Margaritifera margaritifera), algae (Cladophora sp.), and sediment from Elk Creek, Oregon

Estuarine sediment controls on trace metal distributions

Estuarine sediment controls on trace metal distributions

Multi-metal equilibrium sorption and transport modeling for copper, chromium, and arsenic in an iron oxide-coated sand, synthetic groundwater system

Remediation of heavy-metal contaminated soils using succinic acid

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

The assessment of copper and zinc removal from highway stormwater runoff using Apatite II™

Trace metal concentrations in the signal crayfish, Pacifastacus leniusculus (Decapoda: Astacidae), and the stonefly Pteronarcys californica (Plecoptera: Pteronarcyidae) along a downstream gradient of the Umatilla River

Distribution of bioavailable metals and a human health risk assessment from fish and crayfish in the lower Willamette River, Oregon

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