Search for dissertations about: "benzene 2019"

Showing result 1 - 5 of 7 swedish dissertations containing the words benzene 2019.

  2. 1. Towards a versatile gas sensing platform with epitaxial graphene

    Author : Marius Rodner; Jens Eriksson; Kajsa Uvdal; Roland Pohle; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : The work presented in this thesis focuses on how to utilize epitaxially grown graphene on SiC as a basis for ultra-sensitive gas sensor. Several approaches have been tested and evaluated to increase the sensitivity, selectivity, speed of response and stability and of the graphene based gas sensors with a focus on air quality monitoring applications. READ MORE

  4. 2. Unveiling catalytic species in suspension/solution-based reactions by in situ X-ray absorption spectroscopy

    Author : Ning Yuan; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : The palladium (Pd) and ruthenium (Ru) species in several attractive catalysts have been probed using X-ray absorption spectroscopy (XAS). The study of catalyst evolution in suspension- and solution-based reactions was the primary aim. It was achieved by performing in situ XAS experiments on Pd and Ru over the course of the reactions. READ MORE

  5. 3. Unveiling Catalytic Species in Suspension/Solution-Based Reactions by In Situ X-Ray Absorption Spectroscopy : Evolution of Palladium and Ruthenium Species

    Author : Ning Yuan; Xiaodong Zou; Ingmar Persson; Gopinathan Sankar; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Palladium and ruthenium species; Catalysts; Suspension and solution; In situ X-ray absorption spectroscopy; Activation; Deactivation; Inorganic Chemistry; oorganisk kemi;

    Abstract : The palladium (Pd) and ruthenium (Ru) species in several attractive catalysts have been probed using X-ray absorption spectroscopy (XAS). The study of catalyst evolution in suspension- and solution-based reactions was the primary aim. It was achieved by performing in situ XAS experiments on Pd and Ru over the course of the reactions. READ MORE

  6. 4. Occupational exposure to polycyclic aromatic hydrocarbons and early biomarkers related to cardiovascular disease and cancer

    Author : Ayman Alhamdow; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Polycyclic aromatic hydrocarbons (PAH) are omnipresent environmental pollutants composed of fused benzene rings and mainly produced by incomplete combustion of organic material. PAH exposure has been associated with increased risk of cancer and probably cardiovascular disease (CVD). READ MORE

  7. 5. New Materials and Improved Ambient Techniques in Mass Spectrometry

    Author : Nicolò Riboni; Leopold Ilag; Elisa Robotti; Stockholms universitet; []
    Keywords : 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;

    Abstract : 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. READ MORE