Sökning: "ethene"
Visar resultat 1 - 5 av 20 avhandlingar innehållade ordet ethene.
1. The Impact of Hydrocarbon and Carbon Oxide Impuritiesin the Hydrogen Feed of a PEM Fuel Cell
Sammanfattning : The proton exchange membrane fuel cell generates electricity from hydrogen and oxygen (from air) through electrocatalytic reactions in an electrochemical cell. The Pt/C catalyst, commonly used in PEM fuel cells, is very sensitive to impurities that can interact with the active catalyst sites and limit fuel cell performance. LÄS MER
2. Volatile Hydrocarbons in Ambient Air. Gas Chromatographic Assessment, Emissions and Human Exposure
Sammanfattning : Hydrocarbons in ambient air constitute a potential health risk for a large number of individuals. The work reported in this thesis focusses on human exposure to volatile hydrocarbons in ambient air. The analytical determinations were made by adsorbent sampling followed by thermal desorption and gas chromatography. LÄS MER
3. Volatile hazardous hydrocarbons in road tunnels, cars and smoky rooms
Sammanfattning : .... LÄS MER
4. Alkylate Petrol. Environmental Aspects of Volatile Hydrocarbon Emissions
Sammanfattning : All hydrocarbons emitted from production and use of petrol are hazardous to human health and the environment, but to a different extent for individual compounds. This thesis compares and characterizes C2-C8 hydrocarbons related to alkylate petrol and conventional petrol. LÄS MER
5. Volatile hydrocarbons in vapour and exhaust from alkylate-based and conventional petrol
Sammanfattning : .... LÄS MER