Sökning: "gas chromatography mass-spectrometry"
Visar resultat 16 - 20 av 161 avhandlingar innehållade orden gas chromatography mass-spectrometry.
16. Biomarkers of aromatic isocyanates in exposed workers
Sammanfattning : The aromatic isocyanates, toluene diisocyanate (TDI) and methylenediphenyl diisocyanate (MDI), are used in the production of polyurethane (PUR) foams, paints, elastomers and glues. The use of isocyanates is increasing, and exposure to isocyanates is the most common cause of occupational asthma. LÄS MER
17. Volatile metabolites from microorganisms in indoor environments : sampling, analysis and identification
Sammanfattning : Microorganisms are able to produce a wide variety of volatile organic compounds. This thesis deals with sampling, analysis and identification of such compounds, produced by microorganisms commonly found in buildings. LÄS MER
18. Sample preparation and analysis of metabolites from plants in the families of Cyperaceae, Poaceae and Apiaceae
Sammanfattning : An important aspect of understanding how plants effect their environmentis the study of volatile compounds and how these influence interactions between plants and other living organisms. The study of these secondary metabolites from plants can be used in practical applications, such as behaviour control of insects, and is an important part in the search for novel compounds that can be used to influence the behaviour of disease spreading vectors. LÄS MER
19. Development of Protocols for Metabolomics in Biomedical Research using Chemometrics
Sammanfattning : Metabolomics is a rapidly growing research field. It aims for quantification of all the metabolites in a biological sample such as plasma, saliva, cerebrospinal fluid or cells. LÄS MER
20. Determination of benzene in urine and breath for monitoring of benzene exposure
Sammanfattning : The aim of this work was to develop and validate methods for determination of unmetabolized benzene in breath and urine. The methods were intended for the bio monitoring of benzene to assess both occupational and environmental exposure.A method was developed for the determination of benzene in end-exhaled air. LÄS MER