Sökning: "accelerated solvent extraction"

Visar resultat 6 - 8 av 8 avhandlingar innehållade orden accelerated solvent extraction.

  1. 6. Rapid sample preparation and bioanalytical techniques for efficient screening of organic pollutants in the environment

    Författare :Malin Nording; Peter Haglund; Ron Hoogenboom; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; accelerated solvent extraction; CAFLUX; food; immunoassay; PAH; PCDD; PCDF; pressurized liquid extraction; soil; CALUX; cell-based bioassay; chemically activated fluorescent gene expression; chemically activated luciferase gene expression; dioxin; ELISA; enzyme-linked immunosorbent assay; feed; Environmental chemistry; Miljökemi;

    Sammanfattning : Large numbers of samples often need to be prepared and analysed in surveys of organic pollutants in the environment, but while the methods commonly used in such surveys can provide abundant detail they are generally costly, time-consuming and require large amounts of resources, so there is a need for simpler techniques. The work underlying this thesis assessed the potential utility of more convenient sample preparation and bioanalytical techniques for rapidly screening various environmental matrices that could be useful complements to higher resolution methods. LÄS MER

  3. 7. Development of Enhanced Analytical Methodology for Lipid Analysis from Sampling to Detection : A Targeted Lipidomics Approach

    Författare :Giorgis Isaac; Jonas Bergquist; Karin Markides; Monica Waldebäck; William Christie; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Analytical chemistry; electrospray ionization; lipids; liquid chromatography; mass spectrometry; pesticides; phosphatidylcholine; pressurized fluid extraction; sphingomyelin; sulfatides; Analytisk kemi; Analytical chemistry; Analytisk kemi;

    Sammanfattning : This thesis covers a wide range of analytical method development for lipid analysis in complex biological samples; from sample preparation using pressurized fluid extraction (PFE) and separation with reversed phase capillary liquid chromatography (RP-LC) to detection by electrospray ionization mass spectrometry (ESI/MS) and tandem MS.The requirements for fast, reliable and selective extraction methods with minimal usage of solvents have accelerated the development of new extraction techniques. LÄS MER

  4. 8. Amine transaminase: Process development aspects for chiral amine synthesis

    Författare :Tim Börner; Bioteknik; []
    Nyckelord :;

    Sammanfattning : Many modern drugs contain chiral amine moieties and the need for more efficient processes to synthesize these amines in high optical purity and concentration are greatly demanded by the fine chemical and pharma industry. Amine transaminases (ATA) allow for the direct asymmetric synthesis of optically pure amines from ketone substrates. LÄS MER