Sökning: "firefighting foam"

Visar resultat 16 - 20 av 28 uppsatser innehållade orden firefighting foam.

  1. 16. Groundwater Flow and Transport Modelling of PFASs in Åkersberga

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Worada Boonraksasat; [2019]
    Nyckelord :Groundwater modelling; contaminant transport; Visual MODFLOW; MODPATH; MT3DMS; PFASs; AFFFs;

    Sammanfattning : Per- and polyfluoroalkyl substances (PFASs) are a group of man-made organic chemicals that have been commercially used since the 1950s in many consumer products, including impregnated textiles, impregnated paper, nonstick products (e.g., Teflon), cleaning agents, and in firefighting foams. LÄS MER

  3. 17. The study of organofluorine analysis applied to totaloxidizable precursor (TOP) assay to understand perandpolyfluoroalkyl substances (PFASs)

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

    Författare :Crystal Ho; [2018]
    Nyckelord :Poly- per-fluoroalkyl substances; total oxidizable precursor TOP assay; AFFFs; combustion ion chromatography; oxidation;

    Sammanfattning : Per- and polyfluoroalkyl substances (PFASs) are synthetic chemicals which are used in a wide range of applications such as aqueous film forming foam (AFFF) for firefighting, paint, coating and cosmetics. For almost a decade, PFASs have received worldwide attention because of the ubiquitous detection of PFAS in the environment and their bioaccumulative, persistent and give toxic effects on animals and humans. LÄS MER

  4. 18. A study to understand the information gap between total organofluorine analysis and total oxidizable precursor assay on polyfluoroalkyl/perfluoroalkyl substances (PFASs)

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

    Författare :Pontus Larsson; [2018]
    Nyckelord :;

    Sammanfattning : Total oxidizable precursor (TOP) assay is an oxidation method to convert precursor compound of polyfluoroalkyl/perfluoroalkyl substances (PFASs) into measurable perfluorinated carboxylic acids (PFCAs). A previous mass balance study has shown that a loss of fluorine was observed after employing the method to convert the precursors in firefighting foams. LÄS MER

  5. 19. An assessment of thermal desorption as a remediation technique for per- and polyfluoroalkyl substances (PFASs) in contaminated soil

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Anna-Stina Lind; [2018]
    Nyckelord :Thermal desorption; per- and polyfluoroalkyl substances; PFASs; PFBA; PFPeA; PFHxA; PFHpA; PFOA; PFNA; PFDA; PFUnDA; PFBS; PFHxS; PFOS; 6:2 FTSA; 8:2 FTSA; FOSA; PCB; PAH; UPLC MS MS; Termisk rening; Per- och polyfluoralkylsubstanser; PFASs; PFBA; PFPeA; PFHxA; PFHpA; PFOA; PFNA; PFDA; PFUnDA; PFBS; PFHxS; PFOS; 6:2 FTSA; 8:2 FTSA; FOSA; PCB; PAH; UPLC MS MS;

    Sammanfattning : Per- and polyfluoroalkyl substances (PFASs) are a diverse group of persistent organic pollutants. PFASs have a wide area of applications such as stain repellent for paper, textile, furniture and industrial products such as aqueous film forming foams (AFFFs) used for firefighting. LÄS MER

  7. 20. PFAS in recipient sediment of a military airport

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

    Författare :Lovisa Johansson Blomér; [2017]
    Nyckelord :Per- and polyfluoroalkyl substances; PFAS; PFOS; Sediment; Military airport; Per- och polyfluorerade alkylsubstanser; PFAS; PFOS; sediment; militär flygplats;

    Sammanfattning : Per- and polyfluoroalkyl substances, PFASs, are highly fluorinated substances where the carbon chain is fully- or partly fluorinated. A functional group is coupled at the end of the carbon chain which gives PFASs their different properties. LÄS MER