Sökning: "surface analytical techniques"

Visar resultat 26 - 30 av 179 avhandlingar innehållade orden surface analytical techniques.

  1. 26. Enzymatic and Immunological Detection Principles for Environmental and Biological Applications

    Författare :Elisabeth Burestedt; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Analytical chemistry; interleukin-8; D-ammino acids; carbon paste; flow immunoassays; Amperometric biosensors; phenols; Analytisk kemi;

    Sammanfattning : The aim of the thesis was to develop new analytical detection principles based on enzymatic and immunological reactions for sensitive, selective, cost-effective and high sample through-put detection devices. The thesis presents the basic elements and reaction paths necessary for the construction and development of enzyme based amperometric biosensors and immunoassays. LÄS MER

  3. 27. Microfluidic biosensing systems based on enzymes, antibodies and cells

    Författare :Richard Davidsson; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Analytical chemistry; Analytisk kemi; chemiluminescence; immobilization; cell; antibody; enzyme; miniaturization; Microfluidic; microchip;

    Sammanfattning : The rapid developments within the life science and biotechnology areas put up ever-new demands on more sophisticated techniques and methods for chemical and biological analysis to reach deeper insight into the events at molecular level. Miniaturisation of assays and systems on microchips is one way to increase throughput and advance through parallel analysis lines, multiplexing and integration. LÄS MER

  4. 28. Molecularly Imprinted Matrices for Electrochromatography

    Författare :Leif Schweitz; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemical technology and engineering; capillary electrophoresis; enantiomer; film coating; microparticle; continuous bed; monolith; molecular imprinting; capillary electrochromatography; Kemiteknik och kemisk teknologi; Analytical chemistry; Analytisk kemi;

    Sammanfattning : This thesis deals with the combination of electrochromatography and molecular imprinting technology. Electrochromatography is characterised by high separation efficiency, simple instrumentation, and minute consumption of sample. LÄS MER

  5. 29. Use of Biorecognition Elements or Their Mimics in New Flow Analysis Systems

    Författare :Bjarni Bjarnason; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Analytical chemistry; solid phase extraction; molecular imprinting; flow immunoassays; Capacitve biosensor; thermal biosensor; Analytisk kemi;

    Sammanfattning : We have evaluated capacitive and thermal transducers for recognition of bio- molecular interactions with different analytes. These assays were made in flow analysis systems because of the simplicity such methods provide. LÄS MER

  7. 30. New methods for sensitive analysis with nanoelectrospray ionization mass spectrometry

    Författare :Patrik Ek; Johan Roeraade; Åsa Emmer; Andries P. Bruins; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; mass spectrometry; electrospray ionization; nanoelectrospray ionization; adjustable gap; emitter; miniaturization; improved sensitivity; nanoliter picoliter sample volumes; Alzheimer’s disease; amyloid-beta Aβ ; Analytical chemistry; Analytisk kemi;

    Sammanfattning : In this thesis, new methods that address some current limitations in nanoelectrospray mass spectrometry (nESI-MS) analysis are presented. One of the major objectives is the potential gain in sensitivity that can be obtained when employing the proposed techniques. LÄS MER