Sökning: "PFAA"

Hittade 5 uppsatser innehållade ordet PFAA.

  1. 1. PFAS-föroreningars påverkan på Gävles grund- och dricksvattentäkt : Kartläggning av potentiella riskverksamheter och bedömning av risk

    Kandidat-uppsats, Högskolan i Gävle/Miljövetenskap

    Författare :Marie Lundgren; Josefin Flink; [2023]
    Nyckelord :PFAS; PFAA; drinking water; concentration criteria; groundwater source; simplified risk assessment; PFAS; PFAA; dricksvatten; haltkriterier; vattentäkt; förenklad riskbedömning;

    Sammanfattning : The environmental toxin PFAS (per- and polyfluorinated alkyl substances) is a heterogeneous synthetic industrial chemical group that has been used since the 1950s which, due to its attractive properties, has a wide range of applications in our society. PFAS are persistent and bioaccumulative, which means that the levels increase in the environment over time; At higher levels, the substances are toxic and show a negative effect on human health. LÄS MER

  3. 2. Determinants of serum perfluoroalkyl acid concentrations in Swedish adolescents and the importance of drinking water as a source of exposure

    Master-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildning

    Författare :Jennifer Nyström; [2019]
    Nyckelord :perfluoroalkyl acids; PFAAs; adolescents; determinants; exposure; drinking water;

    Sammanfattning : The persistent and toxic perfluoroalkyl acids (PFAAs) are ubiquitously present in the environment and reach humans predominantly via food and drinking water. The aim of the present study was to investigate the effect of low-grade (<10 ng L-1 of single PFAAs) contaminated PFAAs drinking water on serum PFAA concentrations in a representative Swedish adolescent population, and to examine the influence of potential determinants on the variation of the PFAAs serum concentrations. LÄS MER

  4. 3. Method development of total oxidizable precursor assay for perfluoroalkyl acid precursors in domestic sludge

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

    Författare :Lydia Söderlund; [2018]
    Nyckelord :Total oxidizable precursor assay TOP assay ; Perfluoroalkyl substances PFASs ; Perfluoroalkyl acids PFAAs ; Sewage sludge; Oxidative conversion; Organofluorine;

    Sammanfattning : Per- and polyfluoroalkyl substances (PFASs) are persistent organic pollutants used in industrial applications and are globally distributed in the environment. A group of PFASs that are difficult to measure with today’s method are perfluoroalkyl acid precursors (PFAA precursors) that, when degraded, serves as indirect sources of PFAAs. LÄS MER

  5. 4. PFAS : En litteraturstudie med fokus på ämnenas förekomst i livsmedel

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

    Författare :Cassandra Ragén; [2017]
    Nyckelord :;

    Sammanfattning : Sedan 1950-talet har per- och polyfluorerade alkylsubstanser, PFAS, producerats och används i en rad olika produkter, vilket har resulterat i utsläpp till miljön. Ämnena har sedan spridit sig och hittats i vatten, djur och människor. LÄS MER

  7. 5. Screening of endocrine disrupting compounds in Swedish rivers : with focus on organic flame retardants and perfluoroalkylated substances

    Uppsats för yrkesexamina på avancerad nivå, Institutionen för geovetenskaper

    Författare :Erik Ribeli; [2014]
    Nyckelord :EDC; flame retardants; PFAS; PFAA; PFCA; PFSA; screening; rivers; surface water; grab samples; Sweden;

    Sammanfattning : The occurrence of chemical contaminants in the environment is one of the key issues the world isfacing today. Special effort has been put on the screening of endocrine disrupting compounds(EDCs), substances that have been shown to have adverse effects on the endocrine system. LÄS MER