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Showing 1 to 14 of 14 for “"microwave induced plasma"”.
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Sample introduction and solvent effects in an argon and helium microwave induced plasma
Atomic emission spectrometry (AES) with a plasma has proven to be an important method for the analysis of metallic and nonmetallic species in a variety of matrices. Not only is atomic spectrometry useful for accurate and sensitive quantitative analysis, but it can be used as a means of unambiguous …
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Fibre Modification for Concrete Reinforcement using a Novel Atmospheric Microwave Induced Plasma Torch (MIPT)
This research investigates the design of a novel microwave induced plasma torch for the surface modification of non-corrosive fibres. The system was developed to reduce the equipment cost, and production time needed in the conventional plasma treatment. To generate a consistent and low-cost …
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The evaluation of a low powered microwave induced plasma as an atom cell for atomic spectrometry
The range of plasma spectroscopy tends to increase with the introduction of more efficient plasma excitation sources. In this thesis the use of one such plasma excitation source, the microwave induced plasma is evaluated as an atom cell for atomic spectrometry. The modes of spectrometry evaluated …
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Development and characterization of a low power helium microwave induced plasma for spectrometric determinations of metals and nonmetals
… centers on the development of a new helium microwave induced plasma. The analytical utility of this new plasma source is critically evaluated. To sustain the helium plasma a TM ₀₁₀ high efficiency microwave induced plasma, HEMIP, was used. The HEMIP is a modification of the original …
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Aspects of the microwave induced plasma as an element selective detector for supercritical fluid chromatography and supercritical fluid extraction
… the excitation characteristics of a helium microwave induced plasma (He MIP). In this work, the influence of CO₂ on specific atomic and ionic transitions of Cl, Br, I, P, and S is described. Also presented is the determined relationship between transition energy and degree of signal …
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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 based detectors using plasmas have become popular to fill this void. This research stems from several characteristics that the plasma based detectors possess which make them more appealing than flame-based photometric detectors. These characteristics include improved …
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Design, implementation and control of microwave plasma gasification system for syngas production
… It applies the newest technologies of microwave plasma on a traditional method known as gasification. The simulation of this system has been achieved through a high frequency structure simulator to decide the best design of the structure. Microwave radiation at the frequency of 2.45 GHz …
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Investigation of the supercritical fluid extraction and detection of metals in contaminated soils
… by decompressing the SF-CO₂ and analyte into a microwave induced plasma, whereby the resulting Iron atomic emission signal was quantified. This dissertation reports the first successful coupling of SFE and Microwave Induced Plasma - Atomic Emission Detection (MIP-AED) for the on-line analysis of …
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Microwave plasma synthesis of nano-sized silicon carbide at atmospheric pressure
… pulsed laser deposition, sol-gel processes, microwave heating and various plasma techniques. Among the different synthesis methods reported in the literature, very few experiments investigate the microwave-induced plasma synthesis of SiC nanoparticles. The few reported studies show promising …
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A study of microwave induced plasmas
In a microwave induced plasma (MIP) generated in argon under atmospheric pressure using slab-line and TM 10 cavities, the electron density (Ne), excitation and rotational temperatures, detection limit and matrix factor for nine elements and microwave impedance have been determined for a range of …
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Development of a low-power molecular microwave plasma and its application as an atom source for atomic spectroscopy
… 1) To develop a high-efficiency low-power TM-010 microwave cavity for nitrogen support gas at atmospheric pressure, 2) To discover and physically characterize potential laser and emission spectroscopic applications of this atom source, with a particular emphasis on laser-induced fluorescence. The …
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Multimodal Polyethylene-Graphene Nanocomposite via Melt Extrusion
… multimodal-high-density polyethylene HDPE by a microwave-induced plasma graphene, via melt intercalation, using a closely self-wiping co-rotating twin-screw compounding extruder. The tailored process included designing a suitable screw configuration, paired with coordinating extruder conditions …
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Establishing a calibration for a microwave plasma continuous emissions monitor
… 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 calibration subsystem attached to the sample line for real-time span calibration of the monitored …
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Field sampling and flow injection strategies for trace analysis and element speciation.
… experiments utilising gas chromatography-microwave induced plasma-atomic emission spectrometry (GC-MIP-AES) and FI. The approach was based on the preconcentration of mercury on sulphydryl cotton and after elution from the microcolumn, separation and quantitation of methyl-, ethyl- and …