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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 75 for “"LA-ICP-MS"”.
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Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) as a Biomonitoring Tool
Using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) this research analyzed human cadaver hair for gadolinium and mice hair samples for cadmium. This project combined fundamental bench science (analytical chemistry and animal studies), and insight into exposures to an …
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XCT, SEM, and LA-ICP-MS map investigation of chondrule FGRS in CM2 Aguas Zarcas
… investigates the formation of fine-grained rims (FGRs) and their relationship to the matrix in CM2 Aguas Zarcas (AZ), combining scanning electron microscopy (SEM), X-ray computed tomography (XCT), and laser-ablation inductively coupled plasma mass spectroscopy (LA-ICP-MS) analyses, enabling a …
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Provenance and Tectonic Implications of LA-ICP-MS Zircon Depth-Profiling, Nanaimo Basin, British Columbia, Canada
… provide an important independent test of the Late Cretaceous paleogeographic position for the basin, and the associated Insular Superterrane, Coast Plutonic Complex (CPC), and North Cascades of the North American Cordillera. Detrital zircon populations not derived from the CPC provide the best …
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Beiträge zur räumlich aufgelösten Analyse mittels Scanning Laserablation-ICP-Massenspektrometrie unter besonderer Berücksichtigung von Schichtsystemen und Supraleitern
… räumlich aufgelöster Analyse mittels Scanning Laserablation-ICP-Massenspektrometrie dar. Eine neue Behandlung zur Quantifizierung transienter analytischer Signale wurde für die Wiederherstellung von Konzentrationsprofilen vorgeschlagen. Die Anwendung der entwickelten Modelle auf die räumlich …
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Fundamental Studies of Femtosecond Laser Interactions with Solids and Their Applications to Laser Ablation Inductively Coupled Plasma Mass Spectrometry for Environmental Analysis
Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) has been successfully applied in many research areas. Compared to conventional analytical techniques, it has the advantages of minimum sample preparation and high spatial resolution capabilities. Elemental and isotopic …
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Caratterizzazione e studi di provenienza delle malte della Villa dei Quintili (Roma)
Nella presente tesi sono state esaminate alcune malte storiche romane prelevate all interno della Villa dei Quintili , un sito romano di grande interesse storico-archeologico, risalente al II sec. d.C. Si tratta del primo studio archeometrico ad oggi effettuato sul sito in questione ed è stato …
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A comparison of the Nickel and the conventional geothermometers with respect to the Jagersfontein and the Matsoku kimberlite peridotite xenolits
… Ni compositions of garnets determined by PIXE, LA-ICP-MS and SIMS were compared to select the most 'reliable' dataset. Four matrix-matched secondary garnet standards were developed for the cross-checking and testing of the accuracy of data. The standards were developed by multi-method analyses, …
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INVESTIGATION OF RESIDUAL MINERAL CONTENT OF BAUXITE STOCKPILES, SALINE MINING DISTRICT, ARKANSAS, U.S.A.
… incorporates five bauxite stockpiles (SP1, Clay, SP2, SP3, SP4) with varying amounts of alumina content situated on approximately 10 acres of land within an area of the former mine recognized as Section 20. Over the past several years, there has been renewed economic interest in minerals that …
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Investigation of nutrient solutions for the hydroponic growth of plants
… is used extensively in food production and plant research, allowing optimal control over the supply of elements to the plant. In hydroponics, nutrient can be delivered via a solution that is supplied to the growing plant or as a seed coat or treatment that is applied to the seed before sowing …
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Régészeti obszidiánok forrásterületének meghatározása
… obszidiáneszközök forrásterületének megállapítására irányuló (proveniencia) vizsgálatokkal foglalkoztam. Az obszidiánok mint természetes anyagok keletkezésének rövid áttekintése után az obszidián kőeszközök régészeti jelentőségét vázoltam. Ezt követően összefoglaltam az obszidián, mint …
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Major and trace element characteristics of biotite and chlorite as proxies for gold ore mineralization
The Archean Hattu schist belt in eastern Finland is host to several orogenic gold occurrences. One of these deposits is the Pampalo gold deposit located in Hattu, Ilomantsi. Major and trace element characteristics of biotite and chlorite were analyzed from a representative collection of rock types …
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Interpreting Forensic Trace Evidence using Multi-Elemental and Spectroscopic Data
… Accessibility to the techniques like LIBS, LA-ICP-MS and Raman Microscopy that generate multivariate spectroscopic data, has necessitated the need for advanced statistical methods for evidence analysis. The first aim of this thesis is to ascertain reliability and repeatability of evidential …
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Investigating the Mechanics and Chemistry of Sickle Polish Development
… sickles containing flint and novaculite blades were used to harvest high and low moisture content rye and common fescue and associated field weeds. The differences in the development of sickle gloss were examined. High moisture content plants create thick, smooth fields of polish with …
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Advances in understanding melt-affected firn and ice cores from the polar regions
… ice core science around the world, even in the polar regions where near-surface melt and rain-on-snow events are occurring more frequently, more extensively, and adversely affect the preservation of numerous ice-core climate proxies. The age scale development for a new firn core from Young Island …
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The geochemistry of a suite of eclogite xenoliths from the Rietfontein Kimberlite, South Africa
… trace element compositions were determined by Laser Ablation Inductively-Coupled-Plasma Mass Spectrometry (LA-ICP-MS) techniques. Oxygen isotopic compositions of five garnet samples were obtained using laser flourination techniques, followed by analysis by gas source mass spectrometry.
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Intercalation von Stickstoff und Wasserstoff in Sr2N sowie ortsabhängige Feststoffcharakterisierung mit Laserablation
… schichtartigen Aufbau aus EA6N-Oktaedern Intercalationsreaktionen. Die Redox-Intercalation von Stickstoff in Sr2N wurde an Einkristallen untersucht. Nur durch eine drastische Erhöhung des Reaktionsgasdruckes im Vergleich zu den Reaktionen an mikrokristallinen Proben wurde die Intercalation der …
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Sledování distribuce esenciálních prvků a platiny v měkkých tkáních
… nejčastější choroby. Přestože výzkumům v oblasti léčby nádorových onemocnění je věnována náležitá pozornost již několik desítek let, stále je s onkologickou léčbou spojena řada problémů. Jedním z těchto problémů je, že mnohé nádory nejsou schopné zcela překonat rezistenci vůči současně …
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A Comparison of Geochemistry, Carbonate Mineralogy, and Argillic Alteration between the Dome Prospect and the Main Au Resource of the Donlin Creek Project in Southwest Alaska
… Donlin Creek project, located in southwestern Alaska, contains a measured and indicated resource of ~35 Moz of Au, with an inferred resource of 4 Moz. This district is spatially associated with a base-metal prospect at Dome, 6 km to the north-northeast. Previous studies indicated differences in …
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The Effects of Amphibole- and Sulfide-Producing Melts on Crustal Strength in Gabbros of Lower Oceanic Crust in Oceanic Core Complexes, Mid-Atlantic and Southwest Indian Ridges
… core complexes in the slow-spreading Mid-Atlantic Ridge (MAR) and the ultraslow spreading Southwest Indian Ridge (SWIR). Dikelets are a texture found in thin section samples from these systems that form as a result of crystal-plastic deformation. Thin section samples from the Atlantis …
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Low rare earth element concentration impact glass from the K/T Boundary at Beloc
This paper seeks to describe an impact glass from the K/T boundary layer at Beloc that is depleted in rare earth elements (REE) relative to continental crust. It is widely agreed that a large bolide struck the Yucatan Peninsula roughly 65 Ma spreading a worldwide iridium anomaly. However, there is …
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