Sökning: "high resolution mass spectrometry"

Visar resultat 1 - 5 av 84 avhandlingar innehållade orden high resolution mass spectrometry.

  1. 1. New Materials and Improved Ambient Techniques in Mass Spectrometry

    Detta är en avhandling från Stockholm : Department of Environmental Science and Analytical Chemistry, Stockholm University

    Författare :Nicolò Riboni; Stockholms universitet.; [2019]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mass Spectrometry; Solid Phase Microextraction; Ambient Mass Spectrometry; Desorption Electrospray Ionization; Paper Spray Ionization; Cavitands; BTEX; New Psychoactive Substances; Analytical Chemistry; analytisk kemi;

    Sammanfattning : Mass spectrometry (MS) is used in several fields, e.g. biology, environmental monitoring, medicine and forensics due to excellent qualitative and quantitative capabilities. The development of new instrumental setups and ionization sources is crucial to analyze a variety of compounds at trace levels. LÄS MER

  2. 2. Mass Spectrometry of Biologically Active Small Molecules Focusing on polyphenols, alkaloids and amino acids

    Detta är en avhandling från Stockholm : Department of Analytic Chemistry, Stockholm University

    Författare :Zdeněk Spáčil; Stockholms universitet.; [2010]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; LC-MS; LDI; Mass spectrometry; HPLC; UHPLC; polyphenols; phenolic acids; BMAA; NATURAL SCIENCES Chemistry Analytical chemistry Separation methods; NATURVETENSKAP Kemi Analytisk kemi Separationsmetoder; NATURAL SCIENCES Chemistry Analytical chemistry; NATURVETENSKAP Kemi Analytisk kemi; Analytical Chemistry; analytisk kemi;

    Sammanfattning : The foci of this dissertation are on advanced liquid chromatography (LC) separation and mass spectrometry (MS) techniques for the analysis of small bioactive molecules. In addition to discussing general aspects of such techniques the results from analyses of polyphenols (PPs), alkaloids and amino acids published in five appended studies are presented and discussed. LÄS MER

  3. 3. Molecular and epidemiological studies on eyes with pseudoexfoliation syndrome

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Amelie Botling Taube; Uppsala universitet.; [2015]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pseduoexfoliation syndrome; PEX; aqueous humor; cataract; cataract surgery; lens capsule; proteomics; mass spectrometry; MS; MALDI TOF MS MS; quantitative proteomics; iTRAQ; dimethyl labeling; imaging mass spectrometry; IMS; time of flight secondary ion mass spectrometry; TOF-SIMS; crystallin; epidemiology; risk factor; Ophtalmology; Oftalmiatrik;

    Sammanfattning : Pseudoexfoliation (PEX) syndrome is an age-related condition characterized by the production and accumulation of extracellular fibrillary material in the anterior segment of the eye. PEX predisposes for several pathological conditions, such as glaucoma and complications during and after cataract surgery. LÄS MER

  4. 4. Fluorine mass balance in wildlife and consumer products How much organofluorine are we missing?

    Detta är en avhandling från Stockholm : Department of Environmental Science and Analytical Chemistry, Stockholm University

    Författare :Lara Schultes; Stockholms universitet.; [2019]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; PFASs; PFOS; fluorine mass balance; organofluorine; EOF; TF; wildlife; consumer products; combustion ion chromatography; high resolution mass spectrometry; suspect screening; Applied Environmental Science; tillämpad miljövetenskap;

    Sammanfattning : Per- and polyfluoroalkyl substances (PFASs) are a class of anthropogenic pollutants. Many PFASs are highly persistent and have been linked to adverse effects in humans. According to latest estimates, there are more than 4700 PFASs in global commerce, which poses immense challenges for environmental monitoring. LÄS MER

  5. 5. Managing and Exploring Large Data Sets Generated by Liquid Separation - Mass Spectrometry

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Daniel Bäckström; Uppsala universitet.; [2007]
    Nyckelord :Analytical chemistry; liquid chromatography; capillary electrophoresis; capillary electrochromatography; mass spectrometry; electro spray ionization; chemometrics; multivariate data analysis; peptide; biomarkers; fingerprints; PCA; alignment; data compression; ANOVA; target correlation; data management; Analytisk kemi;

    Sammanfattning : A trend in natural science and especially in analytical chemistry is the increasing need for analysis of a large number of complex samples with low analyte concentrations. Biological samples (urine, blood, plasma, cerebral spinal fluid, tissue etc. LÄS MER