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.
Results
Showing 1 to 20 of 32 for “"Atomic emission spectroscopy."”.
-
Design and Characterization of a Theta Pinch Discharge for Atomic Emission Spectroscopy
… of a preexisting plasma was studied as an emission source for the elemental analysis of solid materials. This high energy plasma has the ability to directly sample solid materials. A theta pinch discharge was designed and constructed to create this magnetically compressed plasma. In the …
-
Elemental Characterization of Municipal Solid Waste Incinerator Ash and Its Leachates Using Neutron Activation Analysis and Inductively Coupled Plasma Atomic Emission Spectroscopy
Incineration of municipal solid waste (MSW) is an increasingly attractive option for dealing with the burgeoning quantity of solid waste generated in the West. A combination of neutron activation analysis (NAA), inductively coupled plasma (ICP), and x-ray fluorescence (XRF) are used to analyze a …
-
SLURRY ATOMISATION SYSTEM FOR PROCESS CONTROL
… of slurry atomisation - Direct Current Plasma - Atomic Emission Spectroscopy (DCP-AES) were investigated using excitation temperature (Texc) measurements , simplex optimisation, particle transport experiments and computerised tomography .
-
The microwave digestion of solids
… analysis of biological and chemical samples by atomic absorption spectroscopy (AAS) and inductively coupled plasma atomic emission spectroscopy (ICP-AES) involves the time consuming operation of digesting the samples in acid on a hot plate. However, much time saving has been demonstrated by the …
-
Synthesis and characterization of magnetic nanorings for neuronal stimulation
… scanning magnetometry and induced coupled plasma atomic emission spectroscopy were used to determine magnetic properties, including saturation magnetization (Ms) and coercive field (He). Finally, calorimetric measurements were performed to calculate specific power losses (SLPs) of varying …
-
Heavy Metal Concentrations in Springs and Sinkholes in and Around Springfield, Greene County, Missouri
… and lead (Pb) using Inductively Coupled Plasma-Atomic Emission Spectroscopy (ICP-AES) and a single nitric acid extraction. A t-test was used to compare each of the statistical mean metal concentrations with controls (deionized water passed through a Barnsted/Thermolyne filtration apparatus), and …
-
Microwave digestion methods for preparation of platinum ore samples for Icp analysis
… were carried out by inductively coupled plasma atomic-emission spectroscopy (ICP-AES). To reduce matrix interferences during analysis, a predigestion step with 50 mL of 1:1 nitric acid was introduced. Both ICP-AES and inductively plasma mass spectroscopy (ICP-MS) were used for analysis of sample …
-
Development and Validation of Laser-Induced Breakdown Spectroscopy Methods for the Analysis of Aqueous Solutions
<p>Laser-induced breakdown spectroscopy (LIBS) is an analytical technique that uses the focused energy of a pulsed laser as a sampling and excitation source for atomic emission spectroscopy (AES). LIBS has some distinct advantages over traditional AES methods: ability to analyze any phase of …
-
Genetically engineered phage fibers and coatings for antibacterial applications
… fibers is confirmed via energy-dispersive spectroscopy (EDS) and inductively-coupled plasma atomic emission spectroscopy (ICP-AES), showing -0.61,pg/cm of silver on E3-Ag fibers. This degree of silverization is threefold greater than that attainable for the unmodified M13-Ag fibers. …
-
A Novel Method for Confirming the Presence of Volatile Reduced Sulfide Compounds via Inductively Coupled Plasma-Optical Emission Spectroscopy
… found on the drywall, and instruments such as atomic absorption can only test for one metal at a time. </p> <p>This investigation is beneficial because it uses a novel technique. This experiment focused on developing a method for the ICP-AES, inductively coupled plasma-atomic emission …
-
Detection and characterization of nanoparticles in the surface water: challenges and findings
… as well as induced coupled plasma (ICP) -atomic emission spectroscopy (AES) at discrete time of sonication. Results clearly showed that the dispersion of the ENPs is very small but increased with time of sonication. Among the metallic analytes studied, Copper had better dispersion compared …
-
Manufacturing of synthetic soda ash
… such as FTIR (Fourier Transform Infrared spectroscopy), Scanning Electron Microscopy and Energy Dispersive X-ray Spectroscopy, Inductively Coupled Plasma Mass Spectrometry (ICP-MS) and Inductively Coupled Plasma Atomic Emission spectroscopy (ICP-AES). There are certain standard …
-
The evaluation of an argon and helium highly efficient microwave induced plasma as an element selective detector for packed column super critical fluid chromatography
Atomic emission spectroscopy is a powerful method for chemical analysis because it offers convenient qualitative and quantitative determination of the elemental composition of an analytical sample. Although most frequently used to determine the total concentration of a given analyte, atomic …
-
FIRST ROW TRANSITION METAL OXIDES AS ELECTROCATALYSTS FOR ANION EXCHANGE MEMBRANE FUEL CELLS AND ELECTROLYZERS
… techniques including thermogravimetric analysis, atomic emission spectroscopy, X-ray diffraction, scanning/transmission electron microscopy, X-ray photoelectron spectroscopy, and devices including fuel cell and electrolyzer membrane electrode assemblies. Contrary to popular opinion, none of the …
-
Understanding the active sites of Mg-Al oxide catalysts in the formation of aromatic platform chemicals from acetaldehyde
… spinning nuclear magnetic resonance (MAS NMR) spectroscopy, inductively coupled plasma atomic emission spectroscopy (ICP-AES), and N₂ adsorption-desorption experiments at 77 K. The acid-base character of the MgO-based materials was analyzed using a homemade temperature programmed …
-
Establishing a calibration for a microwave plasma continuous emissions monitor
… to provide an accurate real-time continuous emissions monitor (CEM) for hazardous air-pollution metals as a viable option to EPA Method 29, a Microwave Induced Plasma (MIP) system is under development for real-time atomic emission spectroscopy in stack exhaust. This MIP-CEM has a nebulizer …
-
Development of a low-power molecular microwave plasma and its application as an atom source for atomic spectroscopy
… and physically characterize potential laser and emission spectroscopic applications of this atom source, with a particular emphasis on laser-induced fluorescence. The result is the most efficient microwave-induced plasma cavity for nitrogen at one atmosphere that exists to date, giving stable and …
-
INVESTIGATION OF CHEMOMETRICS METHODS FOR CHARACTERISING DRIFT PHENOMENA IN iCK-AES
… drift phenomena in inductively coupled plasma atomic emission spectroscopy (ICP-AES) in order to develop novel correction procedures to aid routine analysis. Long-term drift of the analytical signal continues to be a potential disadvantage when using ICP-AES and often necessitates regular …
-
Qualitative and semi-quantitative physico-chemical characterization of some calcium phosphate implant and bone samples
… of X-ray powder diffraction, infra-red spectroscopy, inductively-coupled plasma atomic emission spectroscopy, atomic absorption spectroscopy, and thermal decomposition. In addition, a series of adsorption/exchange experiments were conducted in which implant and bone samples were exposed …
-
Flow injection analysis (FIA) determination of lead by hydride generation in banded coral skeletons /
… hydride generation direct current plasma atomic emission spectrometric (FI-HG-DCP-AES) method was developed for the determination of lead at ng.ml-l level. Potassium ferricyanide (K3Fe(CN)6) was used along with sodium tetrahydroborate(III) (NaBH4) to produce plumbane (PbH4) in an acid …
Page 1 of 2