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Showing 1 to 20 of 546 for “"High Performance Liquid Chromatography"”.
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Preparative high performance liquid chromatography
… and concentration; the column that showed the highest TYF value was used for the preparative separation and identification of three positional isomers of high molecular weight (634): 3,4-di(p-bromophenyl)-1,2,5-triphenylcyclo-2,4-pentadien-1-methyl ether; 2,3-di(p-bromophenyl …
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Selectivity and temperature effects in high performance liquid chromatography
A study of six liquid chromatographic column packing materials was conducted. The materials investigated were: SI-60, SI-100, ALOX T, RP-2, RP-8, and RP-18 (E. M. Laboratories, Elmsford, N.Y.). The column packing materials had an average particle diameter of 10 µm and were slurry packed into …
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Laser-based optical activity detector for high performance liquid chromatography
… system is based on the use of a laser and high quality optics. A detection limit approaching that of the conventional UV absorption detector can be achieved in a small volume flow cell. Three specific applications will be discussed. In human urine, the determination of various sugars, …
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Determination of Lactose by Reversed-Phase High Performance Liquid Chromatography.
<p>Lactose is the common disaccharide found in dairy products. It can, however, be a source of discomfort for those whom are lactose intolerant. Therefore, it is necessary to accurately, reliably, and efficiently determine the lactose content of foods. The goal of this research was to develop a …
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Analysis of plant analytes using capillary electrophoresis and high performance liquid chromatography
… methods. The focus of this study was to develop high performance liquid chromatography and capillary electrophoresis methods for the analysis of three classes of analytes: osmoregulants, minerals and amino acids. Firstly, this study explored the potential of capillary electrophoresis for the …
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The analysis of marine algae photosynthetic pigments by high performance liquid chromatography
… of in vitro algal cultures, using reverse-phase high performance liquid chromatography (HPLC) is described. This technique was extended to analysis of photosynthetic pigments in samples from the SIBEX-I Expedition; a preconcentration technique was developed to allow a reduction in sample volume …
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The Determination of Trace Metals by High Performance Liquid Chromatography with Photometric Detection
… improved methods of determination are required. High performance liquid chromatography has grown in importance as a technique, especially since the synthesis of better column packings. The adaptability of reverse phase and ion chromatography with new post-column reagents for photometric detection …
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Incorporation of Carbon Nanoparticles in Polyaryletherketone Matrices for High Performance Liquid Chromatography Applications
… are an option for rotary shear valves in High Performance Liquid Chromatography (HPLC) applications owing to their high strength, thermal resilience, and chemical inertness. In this study, the effects of adding carbon nano particles at a 1% weight loading to 30% carbon fiber loaded PAEK …
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Investigation of the photochemical properties of ruthenium polypyridyl complexes using high performance liquid chromatography
… of Ruthenium Polypyridyl Complexes using High Performance Liquid Chromatography (HPLC). In chapter 1, topics relevant to the studies presented in this thesis are introduces. An introduction highlights the literature relevant to the topic. In Chapter 2, the experimental and optimisation of …
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An Immobolized Surfactant Extraction Technique Compatible with High Performance Liquid Chromatography-Ultraviolet Visible Detection
Surfactant mediated extractions are analogous to liquid-liquid extractions (LLE) except surfactants are used as extractants instead of organic solvents. The benefit for using surfactants for extractions includes lower toxicity, lower associated costs and direct compatibility with high performance …
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Interfacing High Performance Liquid Chromatography with Inductively Coupled Plasma Mass Spectrometry for Speciation Studies
A novel interface for the coupling of high performance liquid chromatography (HPLC) with inductively coupled plasma mass spectrometry (ICP-MS) for the speciation of organometallic compounds has been developed and utilised for a number of diverse applications. Desolvation of the sample prior to …
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Fluorescent Components in Human Urine. Characterization by High Performance Liquid Chromatography With Fluorescence Detection (Hplc)
This study has characterized the fluorescent components of the human urine matrix using a unique HPLC-fluorescence detection system. The detection system provided characterization information based on the results returned by a reverse file-search of trapped chromatographic peak excitation and …
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