Sökning: "benzo[a]pyrene"

Visar resultat 1 - 5 av 41 avhandlingar innehållade ordet benzo[a]pyrene.

  1. 1. Methods for Determination of Benzo(a)pyrene and High Molecular Weight (>300 Da) Polycyclic Aromatic Hydrocarbons in Particulate Matter from Ambient Air and Vehicle Exhausts

    Författare :Christoffer Bergvall; Roger Westerholm; Stephen Wise; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; PAH; dibenzopyrene; benzo a pyrene; standard reference material; air particulate matter; diesel particulate matter; toxic equivalence factor; ultrasonic assisted extraction; accelerated solvent extraction; automation; online coupling; GC MC; LC GC MS; Analytical chemistry; Analytisk kemi; Analytical Chemistry; analytisk kemi;

    Sammanfattning : Air pollution with particulate matter (PM) raises considerable concern because of its adverse effects on human health. For this reason, and because the mechanisms of PM toxicity are not fully known, there is an urgent need to determine the chemical constituents of atmospheric PM, especially PM emanating from traffic - a major source of urban PM. LÄS MER

  2. 2. Binding of benzo(a)pyrene metabolites and derivatives to DNA : characterization using optical spectroscopy techniques

    Författare :Ola Undeman; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : DNA with covalently bound benzo(a)pyrene (BP) derivatives was studied with fluorescence spectroscopy, fluorescence decay measurements, fluorescence quenching measurements, light absorption and linear dichroism of flow oriented samples. The modified DNA was prepared in three different ways: (1) by incubating calf thymus DNA with rat liver micromomes, necessary cofactors and benzo(a)pyrene or derivatives of benzo(a)pyrene, (2) by isolating DNA. LÄS MER

  3. 3. Conformation and dynamics of DNA : effects of covalent binding of benzo(a)pyrene diol epoxide

    Författare :Per-Olof Lycksell; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  4. 4. Extraction of Polycyclic Aromatic Hydrocarbons (PAHs) in diesel and coal fly ash particulate matter : Emphasis on the carcinogenic benzo[a]pyrene and dibenzopyrene isomers

    Författare :Silvia Masala; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  5. 5. Characterization of toxicological effects of a novel in vivo benzo[a]pyrene metabolite in colonic cells

    Författare :Mirjam Nordling; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; Polycyclic aromatic hydrocarbons; benzo[a]pyrene; colon cancer; genotoxicity; oxidative DNA damage.;

    Sammanfattning : Cancer of the colon and rectum is the third most common cancer form in the world. Where the majority of cases fall into the category of sporadic colorectal cancer (CRC), lifestyle and diet have been found to be important risk factors associated with CRC. LÄS MER