Search for dissertations about: "benzene"

Showing result 1 - 5 of 107 swedish dissertations containing the word benzene.

  2. 1. Determination of benzene in urine and breath for monitoring of benzene exposure

    Author : Göran Ljungkvist; Göteborgs universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biological monitoring; benzene; breath; urine; dynamic headspace; membrane; gas chromatography; mass spectrometry; thermal desorption;

    Abstract : 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. READ MORE

  4. 2. Alkylation of benzene/ethanol and toluene/methanol over ZSM-5

    Author : Junjun Yuan; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; alkylation of aromatics; benzene; xylene isomers; toluene; ethanol; zeolites; ethylbenzene; Bronsted acids; acid catalysts; GC; SiO2 Al2O3; acidic protons; ration; activity and selectivity;

    Abstract : .... READ MORE

  5. 3. Benzene-char conversion and particle-vapor characterization in biomass gasification

    Author : Mario Morgalla; Michael Strand; Leteng Lin; Henrik Wiinikka; Linnéuniversitetet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; biomass gasification; fluidized bed; particulate matter; aerosol; char; tars; benzene conversion.; Bioenergiteknik Energi- och Miljöteknik; Bioenergy Technology;

    Abstract : Biomass is increasingly attracting attention as an alternative to fossil fuels. Gasification permits the thermochemical conversion of biomass into a product gas rich in carbon monoxide and hydrogen. The product gas can be further processed to generate heat, electricity, synthesis gas, chemicals, and biofuels. READ MORE

  6. 4. NMR studies of complex fluids and solids formed by surfactants

    Author : Niklas Hedin; KTH; []
    Keywords : CTAB; CTAC; decane; benzene; polysaccharide; micelle; microemulsion; self diffusion;

    Abstract : NMR methods have been designed and employed in studying ofcomplex liquids and solids formed by surfactants. PGSE NMRexperiments are easily biased by convection; this artifact canbe avoided by changing the sample holder and by usingconvection-compensated pulse sequences. READ MORE

  7. 5. Health hazards and cancer in relation to occupational exposures among Swedish seafarers

    Author : Karl Forsell; Eva Andersson; Ingrid Liljelind; Bengt Järvholm; Bente Moen; Göteborgs universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; seafarer; work environment; mesothelioma; lung cancer; hematologic malignancy; benzene; epidemiologi; Epidemiology; Toxicology; toxikologi; family medicine; allmänmedicin; seafarer; work environment; mesothelioma; lung cancer; hematologic malignancy; benzene;

    Abstract : This thesis explores health hazards for seafarers in the Swedish merchant fleet, and occupational risks for lung cancer, mesothelioma and hematologic malignancy (HM). A special focus has been exposure to benzene and biomarker levels for work on product or chemical tankers during the mid-1990’ies. READ MORE