Search for dissertations about: "supported liquid membrane SLM extraction"

Found 5 swedish dissertations containing the words supported liquid membrane SLM extraction.

2. 1. A Novel Miniaturised Dynamic Hollow-Fibre Liquid-Phase Micro-Extraction Method for Xenobiotics in Human Plasma Samples

   Author : Helena Hansson; Ulrika Nilsson; Bo Karlberg; Peter Haglund; Stockholms universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; sample clean-up; human blood plasma; hollow-fibre liquid phase microextraction; supported liquid membrane extraction; SLM; HF-LPME; sample preparation; bioanalysis; liquid-liquid extraction; Chemistry; Kemi; Analytical Chemistry; analytisk kemi;

   Abstract : Bioanalytical chemistry is a challenging field, often involving complex samples, such as blood, plasma, serum or urine. In many applications, sample cleanup is the most demanding and time-consuming step. READ MORE

4. 2. Surface Sampling and Automated Liquid Membrane Extraction of Fungicides

   Author : Margareta Sandahl; Centrum för analys och syntes; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; natural water analysis; microporous membrane liquid-liquid extraction MMLLE ; supported liquid membrane SLM extraction; Dislodgeable fungicide residues; surface sampling; automated sample preparation for HPLC; Analytical chemistry; Analytisk kemi;

   Abstract : A number of approaches for fungicide determination are presented. A surface sampling technique is utilised for the determination of fungicide foliar residues on greenhouse surfaces, mainly leaves. The procedure is based on solvation of the fungicides on the leaf surface with ethanol and HPLC analysis. READ MORE

5. 3. On-line Sample Pretreatment Based on Membrane Enrichment, Mainly Using Supported Liquid Membranes, for Chromatographic Analysis

   Author : Yin Shen; Centrum för analys och syntes; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Biological Sample; Environmental Sample; Capillary Gas Chromatography; Ion Chromatography; Automation; Sample Pretreatment; Enrichment; Membrane; Extraction; Analytical chemistry; Analytisk kemi;

   Abstract : 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. READ MORE

6. 4. Miniaturized, Membrane-Based and Environmentally Green Sample Preparation Systems: Applications for Biological and Environmental Aqueous Samples

   Author : Thaer Barri; Centrum för analys och syntes; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Analytisk kemi; Analytical chemistry; Free concentration; Exhustive extraction; Microporous membrane liquid-liqid extraction; Miniaturization; Supported liquid membrane extraction; Environmental chemistry; Miljökemi;

   Abstract : Contemporary advancements in miniaturization of analytical systems have advantageously fostered development, automation, and hyphenation of a variety of sample preparation techniques. Among several downscaled extraction designs, porous synthetic polymeric membranes (such as flat sheet (FS) or hollow fiber (HF)) have been utilized for membrane-based extraction, separating two aqueous phases (as in supported liquid membrane (SLM) extraction or one aqueous phase and another organic phase (as in microporous membrane liquid-liquid extraction (MMLLE)). READ MORE

7. 5. ω-Transaminase Catalyzed Synthesis of Chiral Amines - Process Improvements Through Whole-cell Immobilization and in situ Product Removal

   Author : Gustav Rehn; Bioteknik; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Abstract : The industrial use of biocatalysts is increasingly important in the production of e.g. pharmaceuticals, chemicals, fuels and foodstuffs. A successful biocatalytic process is dependent on many factors, such as the biocatalyst properties, the nature of the reaction, reactor type and downstream processing. READ MORE