Search for dissertations about: "dioxins"

Showing result 1 - 5 of 50 swedish dissertations containing the word dioxins.

  1. 1. Polybrominated dibenzo-p-dioxins Natural formation mechanisms and biota retention, maternal transfer, and effects

    University dissertation from Umeå : Umeå Universitet

    Author : Kristina Arnoldsson; Umeå universitet.; [2012]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; polybrominated dibenzo-p-dioxins; PBDDs; Baltic Sea; uptake; retention; maternal transfer; metabolism; bioavailability; natural formation; precursor; bromoperoxidase; bromophenol; photochemical transformation; oxidative coupling; hydroxylated polybrominated diphenyl ethers; MEDICINE Chemistry; MEDICIN Kemi; Analytical Chemistry; analytisk kemi;

    Abstract : Polybrominated dibenzo-p-dioxins (PBDD) and dibenzofurans (PBDF) are a group of compounds of emerging interest as potential environmental stressors. Their structures as well as toxic responses are similar to the highly characterized toxicants polychlorinated dibenzo-p-dioxins. READ MORE

  2. 2. New tools for sample preparation and instrumental analysis of dioxins in environmental samples

    University dissertation from Umeå : Umeå universitet

    Author : Lan Do; Umeå universitet.; [2013]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; PCDD Fs; dioxins; pressurized liquid extraction; PLE; selective SPLE; modular M-PLE; soil; sediment; sludge; gas chromatography; new stationary phases; multivariate data analysis; selectivity; interaction; Environmental Science; miljövetenskap;

    Abstract : Polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs), two groups of structurally related chlorinated aromatic hydrocarbons, are of high concern due to their global distribution and extreme toxicity. Since they occur at very low levels, their analysis is complex, challenging and hence there is a need for efficient, reliable and rapid alternative analytical methods. READ MORE

  3. 3. Trace analysis of dioxins and dioxin-like PCBs using comprehensive two-dimensional gas chromatography with electron capture detection

    University dissertation from Umeå : Kemi

    Author : Conny Danielsson; Umeå universitet.; [2006]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Comprehensive two-dimensional gas chromatography; GC × GC; µECD; PCDDs; PCDFs; dioxins; dioxin-like PCBs; Pressurized liquid extraction; PLE; PLE-C; food; feed; fly ash; soil; NATURAL SCIENCES Chemistry Environmental chemistry; NATURVETENSKAP Kemi Miljökemi;

    Abstract : Polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs), two groups of struc-turally related chlorinated aromatic hydrocarbons, generally referred to as “dioxins” are of great concern due to their extreme toxicity and presence in all compartments of the environment. Since they occur at very low levels, their analysis is complex and challenging, and there is a need for cost-efficient, reliable and rapid analytical alternatives to the expensive methods in-volving use of gas chromatography high-resolution mass spectrometry (GC-HRMS). READ MORE

  4. 4. Fate and exposure assessment of PCDD/Fs at contaminated sites

    University dissertation from Umeå : Kemi

    Author : Annika Åberg; Umeå universitet.; [2008]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; contaminated sites; dioxins; PCDD F; exposure; food chain; modeling; risk assessment; physical-chemical properties; förorenade områden; dioxiner; PCDD F; exponering; födokedja; modellering; riskbedömning; fysikaliska-kemiska egenskaper; NATURAL SCIENCES Chemistry Environmental chemistry; NATURVETENSKAP Kemi Miljökemi;

    Abstract : Polychlorinated dibenzo-p-dioxins (PCDD) and polychlorinated dibenzo-furans (PCDFs) belong to the most toxic compounds known to science and they are defined as Persistent Organic Pollutants (POPs) under the Stock-holm Convention. The general human exposure to PCDD/Fs is primarily through dietary intake. READ MORE

  5. 5. Fertility and female dietary exposure to persistent organochlorine compounds

    University dissertation from Anna Axmon, Dept of Occupational and Environmental Medicine, University Hospital, SE-221 85 Lund, Sweden

    Author : Anna Axmon; Lunds universitet.; Lund University.; [2003]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Yrkesmedicin; industrial medicine; arbetsmiljömedicin; Public health; epidemiology; Folkhälsa; epidemiologi; Occupational health; DDE; DDT; dioxins; polychlorinated biphenyls; persistent organochlorine compounds; stillbirths; miscarriages; Fertility; time to pregnancy;

    Abstract : Persistent organochlorine compounds (POC), such as polychlorinated biphenyls (PCB) and dioxins, are long-lived and highly lipophilic compounds which are present in all biota today. In Sweden, one of the major exposure routes for POC is through the consumption of fatty fish from the Baltic Sea, which is off the east coast of Sweden, and one of the most highly exposed populations is the fishermen's wives and sisters from the east coast. READ MORE