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 119 for “"ICP-OES"”.
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The determination of Arsenic in soil by ICP-OES
Please read the abstract in the section 00front of this document
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Development of selective pre-concentration methodology of some of the platinum-group metals in acidic solutions, followed by their direct determination by ICP-OES
… of much improved instrumentation, such as ICP-OES, NAA and XRF, most analytical techniques currently employed for the determination of the platinum-group metals require selective sample preparation that ensures enrichment of the individual platinum-group metals at the trace and ultra trace …
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Heavy metal distribution in Wrigley Head, Moston Brook, Greater Manchester,Northwest England : implications for risk assessment and remediation
… the relationship between XRF and aqua regia/ICP-OES derived heavy metal data, (b) investigate the multiple sources of historical heavy metal contamination, (c) investigate small-scale spatial variation in heavy metal contamination across the study site, (d) assess heavy metal uptake by …
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Nutriční složení různých druhů mléka
… úpravy mléka pro prvkovou analýzu technikou ICP-OES. Pro validaci metody byl použit certifikovaný referenční materiál ERM®-BD150, který byl upravován pomocí mineralizace, přídavku činidel a pomocí disperze. Nejvyšší výtěžnost vápníku při validaci byla stanovena na 90,6 ± 8,6 % při přídavku …
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Gyümölcscefrék beltartalmi változásainak vizsgálata
… készült cefrék makro- és mikorelem vizsgálatát ICP-OES és ICP-MS készülékekkel végeztük el. Ezen kívül vizsgáltuk szárazanyag-tartalmát, fenolos vegyületeket, flavonoid tartalmat, savtartalmat. A cefre elemtartalmának vizsgálata során megfigyeltük a minta szűrés előtti és utáni, valamit a …
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Geochemistry of Holocene coastal deposits (NW Germany): palaeoenvironmental reconstruction
… und wurden in hoher Auflösung u.a. mittels RFA, ICP-OES und ICP-MS auf ihre anorganisch-geochemische Zusammensetzung untersucht. Hauptziel der Arbeit ist es, Erkenntnisse über Art und Herkunft des sedimentierten Materials, Ablagerungsenergetik, Paläosalinität und frühdiagenetische Prozesse der …
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Régészeti obszidiánok forrásterületének meghatározása
… az obszidiánok vizsgálati módszereit (NAA, ICP-OES, ICP-AES, LA-ICP-MS, PIGE, PIXE, PGAA), különös tekintettel a vizsgálati eredményeknek a proveniencia vizsgálatokban való felhasználhatóságukat. Végül néhány konkrét vizsgálaton keresztül, irodalmi példák segítségével bemutattam a fő- és …
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Corrosion Behavior of Potential Structural Materials for use in Nitrate Salts Based Solar Thermal Power Plants
… plasma optical emission spectroscopy (ICP-OES) analysis. Surface morphology was studied using scanning electron microscopy. Surface oxide structure and chemistry was characterized using X-ray diffraction, Raman spectroscopy, energy dispersive spectroscopy, and X-ray photoelectron …
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Zvyšování bělosti kaolinu
… hmoty byla stanovena pomocí COD testu a metodou ICP-OES byly sledovány koncentrace chromogenních složek ve výluhu. V poslední řadě byl měřen index bělosti, jehož zvyšování je cílem diplomové práce, pomocí UV-VIS spektrometru s reflektančním nástavcem.
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Trace Evidence Analysis of Forensic Samples Using Inductively Coupled Plasma
… trace analysis is inductively coupled plasma (ICP) spectrometry; yet, it is seldom used for forensic analysis. In this thesis, four different forensic applications will be explored using ICP spectrometry involving four different types of sample: human head hair, automotive paint, solder and …
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Assessment of heavy metal concentrations in water and sediment of dams in Central Namibia and bioaccumulation of copper in locally occuring crabs and fish
… Coupled Plasma – Optical Emission Spectrometry (ICP-OES). No significant temporal difference (p > 0.05) in metal concentrations was found. Omatako dam had significantly (p < 0.05) higher concentrations of Copper (0.68 mg/L) and Zinc (1.0 mg/L) in the sediment than Von Bach dam. Water at the start …
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Development of bimetallic Pd-Zn catalysts for methanol steam reforming: hydrogen production for fuel cells
… Both impregnation catalysts were confirmed by ICP-OES to contain similar weight Pd loadings i.e. 2.8 and 2.7 wt%, respectively. The actual Pd loading (ICP-OES) was slightly higher than the target loading (2.5 wt%) due to Pd content of Pd salt underestimated during catalyst preparation. …
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The Development of Analytical Procedures for Analysis of Trace Metals in Pharmaceutical Formulations and the Speciation of Arsenic in Antacids
… coupled plasma optical emission spectroscopy (ICP-OES) and inductively coupled plasma mass spectrometry (ICP-MS). The aim of this work was to develop, optimise and validate analytical methods for the determination of Class 1 and Class 2A elements, arsenic (As), cadmium (Cd), mercury (Hg),lead …
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An investigation into Manganese(2+) interferences and retrospective dose assessment of shelled species using EPR spectroscopy
… coupled plasma - optical emission spectroscopy (ICP-OES) was used to determine the Mn²⁺ concentrations in shells of thirteen species. A methodology to quantitatively compare Mn²⁺ concentrations with Mn²⁺ EPR peak intensity in calcified shells was developed as a potential indicator tool for …
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Developing an elevated temperature Pourbaix diagram for zirconium and multi-element Pourbaix diagram of Zircaloy-4
… and concentration measurements were made using ICP-OES and ICP-MS, for zirconium and Zircaloy-4, respectively. For Zr(OH)6²-, Zr(OH)4 (aq), and Zr(OH)2²+ the hydrolysis constants were found to be -19.39±1.98, 1.77±1.60, and 3.72±1.63, and the Gibbs energy of formation were: -2177.40±8.49 kJ/mol; …
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Reactive Sputter Deposition of Lithium Phosphorus Oxynitride Thin Films, A Li Battery Solid State Electrolyte
… coupled plasma optical emission spectroscopy (ICP/OES), and spectroscopic ellipsometry. In addition, film density, and the intrinsic stress of the deposited films were also studied. The highest ionic conductivity of 9.8 x 10-6 S/cm was obtained at elevated deposition temperature and is …
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Design of oil consumption measuring system to determine the effects of evolving oil sump composition over time on diesel engine performance and emissions
… steady state test. This was measured using ICP-AES (ICP-OES) elemental analysis technique, and the Total Base Number for the oil was also determined. An effective and reduced cost oil consumption and replenishing system was developed with this purpose.
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Pilot Study using Elemental Geochemistry as a Means of Discriminating Chert Stratigraphy in the Roberts Mountains Allochthon, Nevada
… used for handheld XRF analysis and 66 for ICP-MS and ICP-OES analysis. Samples were collected from 6 localities in 5 ranges, all with known ages based on radiolarian biostratigraphy. These samples are assigned to either the Slaven, Cherry Spring, or upper Vinini chert, or equivalent units. …
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