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Showing 1 to 7 of 7 for “"Capillary liquid chromatography."”.
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Capillary Liquid Chromatography Using Micro Size Particles
… be realized using small particles (~ 1 µm) in liquid chromatography (LC). However, due to the large pressure drop caused by small particles, conventional LC pumping systems cannot satisfy the pressure requirements needed to drive the mobile phase through the column. Use of ultrahigh pressure, …
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Enhanced NMR Detection of Mass -Limited Samples With Microcoil Probes: Increasing Sample Throughput and Improved on-Line Coupling to Microscale Separations
… By wrapping the coil directly onto fused-silica capillary, microcoil NMR can be easily integrated on-line to microscale separation techniques. As one example, microcoil NMR has been coupled to capillary isotachophoresis (cITP), a form of capillary electrophoresis that can concentrate charged …
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Development of Polymer Monoliths for the Analysis of Peptides and Proteins
… monolith that could be used for size exclusion liquid chromatography of peptides and proteins. This macroscopically uniform monolith did not shrink or swell in either water or tetrahydrofuran. More importantly, it was found to resist adsorption of both acidic and basic proteins in aqueous buffer …
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Pressure-driven and electroosmotically-driven liquid chromatographic separations in packed fused silica capillaries
… assessed. First, the utility of semi-micro Ion Chromatography is explored by the manufacture of 2mm ID analytical and suppressor columns and a micro-conductivity cell. The quality of the columns and detector cell are evaluated by the separation of a test mixture and the calculation of peak …
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Investigations into the determination of polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) by capillary gas chromatography
… congeners, representing 10 isomeric groups) by capillary gas chromatography coupled with mass spectrometry (GC/MS, for PAHs) and electron capture detection (GC/ECD , for PCBs) were studied, with emphasis on the effect of solvent. Having various volatilities and different polarities, solvent …
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Investigations into the extraction and the determination of polycyclic aromatic hydrocarbons (PAHs) from water by solid-phase extraction and capillary gas chromatography/ mass spectrometry
Factors affecting the detennination of PAHs by capillary GC/MS were studied. The effect of the initial column temperature and the injection solvent on the peak areas and heights of sixteen PAHs, considered as priority pollutants, USillg crosslinked methyl silicone (DB!) and 5% diphenyl, 94% …
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Development and validation of quantitative methods for the analysis of clinical biomarkers of iron metabolism applying stable isotopes
… of sulfur, using ICP-MS as a detector, after capillary liquid chromatography for the separation of the species. Sulfur (which is present in nine of the 25 amino acids of the hepcidin-25) can be detected by ICP-MS after the elimination of spectral interferences. For this purpose, three …