Sökning: "supported liquid extraction"
Visar resultat 6 - 10 av 14 avhandlingar innehållade orden supported liquid extraction.
6. On-line Sample Pretreatment Based on Membrane Enrichment, Mainly Using Supported Liquid Membranes, for Chromatographic Analysis
Sammanfattning : The main objective of this work was to construct practical analytical systems for the analysis of environmental and biological samples, using membrane-based techniques for sample pretreatment and chromatography for final analysis. Two types of membrane processes have been applied, with emphasis on automation. LÄS MER
7. Quantitative Bioanalysis : Liquid separations coupled to targeted mass spectrometric measurements of bioactive compounds
Sammanfattning : Performing quantitative analysis of targeted bioactive compounds in biological samples, such as blood plasma, cerebrospinal fluid or extracts from pig liver, put high demands on the ruggedness of the method acquiring the results. In addition to the complexity of the sample matrix, the bioactive compounds targeted for analysis usually have low levels of natural abundance, further increasing the demand on the analytical method sensitivity. LÄS MER
8. Non-porous membrane extractions in contemporary analysis
Sammanfattning : To meet the desirable characteristic for sample preparation in contemporary, i. e. automation, high enrichment, clean-up, selectivity and essential solvent free techniques, the use of non-porous membrane extraction techniques is addressed. LÄS MER
9. Immuno-affinity interactions in sample preparation and analysis
Sammanfattning : Immuno-affinity interactions (antibody-antigen) belong, together with enzyme-inhibitor/substrate/coenzyme; oligosaccharide-lectin; DNA/RNA-protein interactions etc, to the class of bio-recognition. Immuno-affinity is widely used for analysis in immunoassays with numerous applications in a variety fields (i.e. LÄS MER
10. Recovery of Rare Earth Elements from an Apatite Concentrate
Sammanfattning : Rare earth elements (REE) are a group of 17 elements including lanthanides, yttrium and scandium; which are found in a variety of classes of minerals worldwide. The criticality of the application, lack of high grade and economically feasible REE resources and a monopolistic supply situation has raised significant attention in recovery of these metals from low grade ores and waste materials. LÄS MER