Sökning: "PFASs"

Visar resultat 16 - 20 av 76 uppsatser innehållade ordet PFASs.

  1. 16. Quantification of target per- and polyfluoroalkyl substances (PFASs) and extractable organic fluorine (EOF) in crayfish from Lake Vättern, Sweden.

    Kandidat-uppsats, Örebro universitet/Institutionen för naturvetenskap och teknik

    Författare :Wilma Villbrand; [2020]
    Nyckelord :;

    Sammanfattning : Per- and polyfluorinated substances (PFASs) are a family of persistent organic pollutants in which the aliphatic carbon chains have been fluorinated, either completely or partially. One subclass of PFASs are perfluoroalkyl acids (PFAAs), in which perfluoroalkyl carboxylic acids (PFCAs) and perfluoroalkyl sulfonic acids (PFSAs) are two prominent groups. LÄS MER

  3. 17. Treatment of per- and polyfluoroalkylsubstance (PFAS)-contaminated waterusing aeration foam collection

    Uppsats för yrkesexamina på avancerad nivå,

    Författare :Ylva Kjellgren; [2020]
    Nyckelord :PFAS; aeration foam collection; landfill leachate treatment; WWTP;

    Sammanfattning : Landfills are potential sources for PFASs and treatment techniques for landfill leachate are urgently needed. Foam fractionation is an aeration technique which utilizes the tendency of PFASs to escape the liquid phase and build foam. The foam is harvested and with it the contamination. LÄS MER

  4. 18. CHARACTERIZATION OF EARLY LIFE EXPOSURE TO ENVIRONMENTAL CHEMICALS AND ITS IMPACTS ON HEALTH

    Master-uppsats, Örebro universitet/Institutionen för naturvetenskap och teknik

    Författare :Lisanna Sinisalu; [2020]
    Nyckelord :;

    Sammanfattning : The exposome is a complex study that includes both endogenous and exogenous markers related to different diseases as part of the research. Connecting both endogenous and exogenous markers can help explain many associations between environmental chemicals and metabolic profiles, which can be stressors for causing different diseases. LÄS MER

  5. 19. Tre kommuners arbete med PFAS i dricksvatten : En kvalitativ intervjustudie om svårigheter och möjligheter

    Kandidat-uppsats, Linköpings universitet/Tema Miljöförändring

    Författare :Emilia Petersson; Emma Nilsson; [2020]
    Nyckelord :Qualitative Method; Interviews; Difficulties; Opportunities; National Environmental Management; PFAS; Perfluoroalkyl; Polyfluoroalkyl; Perfluorinated; Polyfluorinated Substances; Municipalities; Sweden; Linköping; Halmstad; Uppsala; Kvalitativ metod; Intervjuer; Svårigheter; Möjligheter; Nationell Miljömanagement; PFAS; Perfluoroalkyl; Polyfluoroalkyl; Perfluorerade; Polyfluorerade ämnen; Kommuner; Sverige; Linköping; Halmstad; Uppsala;

    Sammanfattning : Today there are many uncertainties in the form of a lack of knowledge about perfluorinated and polyfluorinated substances (PFAS) regarding long-term risks to health and the environment, there is no efficacy data for many environments. The fluorocarbon bond is the strongest chemical bond, which means that PFAS can be transported long distances, for example through water streams and into the atmosphere. LÄS MER

  7. 20. Bindning av PFAS-ämnen till humus- och fulvosyror : en dialysstudie

    Kandidat-uppsats, SLU/Dept. of Soil and Environment

    Författare :Johannes Kikuchi; [2020]
    Nyckelord :PFOS; PFOA; sorption; kinetics; dissolved organic matter; natural organic matter; DOC; DOM; membrane;

    Sammanfattning : To make more accurate predictions of the mobility of perfluoroalkyl substances (PFAS) in soil and water, better understanding of PFAS sorption to components of the terrestrial and aquatic systems is needed. This study investigated the possible sorption of a range of PFAS compounds with varying chemistries to humic acid (HA) and fulvic acid (FA) using a dialysis bag experimental set-up. LÄS MER