Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 29 for “"toxic metal"”.
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Toxic Metal Concentration and Distribution in Soils of Four Abandoned Landfill Sites, Springfield, Missouri
… and surface water contamination by leachate. Toxic metals are present in the landfills from the disposal of everyday household items, and the two more recently abandoned Springfield landfills were the recipients of waste from a metal plating industry in the city. The landfill soils were tested …
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Interaction of gold mine taillings leachates with soil and geochemical partitioning of toxic metal species
Department of Ecology and Resource Management
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Investigating the Transformations of Arsenic and Toxic Metal(Loid)S Speciation and the Impact on Arsenic Bioaccessibility in Particulate Matter from Mine Tailings Sites Distributed in Different Climates
… tailings are a persistent source of contaminant metal(loid) release, posing potential risks to human and ecosystem health. This study examines the solid-phase weathering, geochemical speciation, and bioaccessibility of arsenic (As), lead (Pb), zinc (Zn), and cadmium (Cd) in sulfidic mine tailings …
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Impacts of microbial activity on trace metal behavior during the bioremediation of phenanthrene-contaminated soils
… (200 mg kg\(^{-1}\)) from soil containing both metals and phenanthrene, over 29 days. Bioremediation of phenanthrene and its effects on trace metal behaviour has been investigated. Metal behaviour studied includes metal speciation and the kinetics of exchange between solution and solid phase and …
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DEVELOPMENT OF INNOVATIVE BURN RATE ADDITIVES FOR DOUBLE BASE PROPELLANT
… burn rate phenomena. However, due to its toxicity the Department of Defense has been trying to find a replacement for lead over the last decade. Research efforts with this goal in mind have generally used the same methodology of either adding different metals, using different grain sizes, …
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Mercury in hair: Method development and application to population studies.
… Study of Pregnancy And Childhood, the toxic metal, mercury, is studied in order to assess whether it presents a danger to the development of children in the UK.The development and optimisation of a digestion procedure for the determination of total mercury in hair is described. The …
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The Impact of Metals and Metal Mixtures on Cardiometabolic Health among Hispanics/Latinos
Ubiquitous in the environment, metal exposures have been linked to many negative health consequences including cardiometabolic diseases. Cardiometabolic diseases including diabetes and hypertension, impact two-thirds of people in the United States and are among the leading causes of death …
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Baseline surveys and metal binding proteins as metal pollution indicators
The field of metal determination as a part of pollution studies, has been critically examined and metal pollution may be defined in one simple statement: The presence of metal binding proteins confirms toxic metal pollution. It has been shown that current methods of metal determination in …
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HSP70 as a Target for Correction of Wilson Disease Causing ATP7B Mutants
… balance in cells and tissues causing serious toxicity. Removal of excess Cu from the body is driven be Cu-transporting ATPase ATP7B, which sequesters the potentially toxic metal and mediates its excretion into the bile. Mutations in the ATP7B result in Wilson disease (WD) that is caused by the …
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Determining the Molecular Underpinnings of Iron Homeostasis in Human Cells
… enzymes but can catalyze the formation of toxic radicals at elevated levels. To maintain the necessary cytoplasmic iron concentration, cells store excess iron in large proteinaceous cages called ferritin and, when available iron levels fall, they degrade these cages, liberating the stored …
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The Removal and Recovery of Oxo-Anions from Aqueous Systems using Nano-Porous Silica Polyamine Composites
… discharges containing high concentrations of toxic metals is omnipresent in the environment. Heavy metal ions from manufacturing sources can compromise the integrity of various ecological cycles as well as negatively impacting the health of humans through drinking water and the food chain. …
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The Removal and Recovery of Oxo-Anions from Aqueous Systems using Nano-Porous Silica Polyamine Composites
… discharges containing high concentrations of toxic metals is omnipresent in the environment. Heavy metal ions from manufacturing sources can compromise the integrity of various ecological cycles as well as negatively impacting the health of humans through drinking water and the food chain. …
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Impacts of trace metal pollution, urbanization and aquifer recharge on Spokane River macroinvertebrates
… Spokane River to determine: 1) accumulation of toxic trace metals in macroinvertebrate tissue, 2) effects of aquifer recharge, and 3) impact of urbanization. I predicted that aquifer inflows of cold, clean water would mitigate effects of pollution, and that reaches above the City of Spokane …
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Rhizosphere Bacteria and Phytostabilization Success: The Association Between Bacteria, Plant Establishment and Metal(loid) Immobilization in Metalliferous Mine Tailings
… traditional cap and plant methods for containing metalliferous mine tailings to prevent wind erosion and contamination of nearby communities and the environment. However, plant establishment during phytostabilization of pyritic legacy mine tailings in semiarid regions is challenging due to …
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Synthesis of a Diverse and Three-Dimensional Fragment Collection and The Development of a Novel Platform for Antibody Dual Functionalisation
… conversions, low yields, and/or the use of toxic metal catalysts. To tackle these issues, the disulfide rebridging reagent divinylpyrimidine (DVP) was modified to incorporate two orthogonal ‘clickable’ handles. By the introduction of the DVP linker into the native disulfide bonds of an …
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Lewis-base Thioacetamide assisted crystallization of lead-free perovskite solar Cells for improved Efficiency
… for the future global commercialization of non-toxic, stable, and efficient perovskite solar cells, by replacing hazardous lead with non-toxic metal elements in the same group as lead in the periodic table, lead-free PSCs have gained pace, with tin being the most promising because to its strong …
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Chemical Treatment Approaches For Industrial Plant Decontamination: Mercury remedation
… hydrocarbons in oil and gas industries. It is a toxic metal and can lead to disastrous failure of processing plants leading to explosions and loss of life. With many of the hydrocarbon processing plants now approaching 30 years in operation they are coming to the end of their economic life and …
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Selective metal ion-capturing by striped nanoparticles
… a hydrophobic molecule, can selectively capture metal ions, of which sensitivity and selectivity are incomparable to homo-ligand coated nanoparticles and disordered structure nanoparticles. The interaction between striped gold nanoparticles and metal ions was intensively demonstrated with various …
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Observations and assessment of iron oxide nanoparticles in metal-polluted mine drainage within a steep redox gradient, and a comparison to synthetic analogs
… at the interfaces of minerals, microbes, and metals drive the cycling of iron and the fate and transport of metal(loid)s in contaminated systems. The former uranium mine near Ronneburg, Germany is one such system, where slightly acidic mine drainage crossing a steep redox gradient (groundwater …
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Compositional engineering of solution-processed solar cells : aligning computational and experimental screening strategies
… to mediate the assembly and growth of plasmonic metal-oxide nanocomposites. The second project evaluates how replacing a portion of the metal content in metal-halide perovskite solar cells with alternative non-toxic metal species impacts the photovoltaic properties of the perovskite film. …
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