Essays about: "Bioconcentration"

Found 5 essays containing the word Bioconcentration.

  1. 1. Uptake of per- and polyfluoroalkyl substances by plants

    University essay from SLU/Dept. of Aquatic Sciences and Assessment

    Author : Laura Gobelius; [2016]
    Keywords : phytoremediation; Arlanda Airport; PFASs; groundwater; soil; plant; AFFF; aqueous fire fighting foams;

    Abstract : The extensive use of per- and polyfluoroalkyl substances (PFASs) as surfactants in, for example textiles,cookware and aqueous firefighting foams (AFFFs) during the last decades has resulted in widespread environmental contamination. Due to the persistent and bioaccumulative characteristics of PFASs, they are ubiquitously found in the environment, wildlife and humans. READ MORE

  2. 2. The bioavailability of perfluoroalkyl substances (PFASs) and polycyclic aromatic hydrocarbons (PAHs) in soil to Eisenia fetida and Cucurbita pepo

    University essay from SLU/Dept. of Aquatic Sciences and Assessment

    Author : Masoumeh Moshfeghi Mohammadi; [2015]
    Keywords : PFASs; PAHs; bioavailability; BAF; BSAF; BCF; earthworm; zucchini;

    Abstract : Persistent organic pollutants (POPs) are organic chemicals of great concern because of their persistency, bioaccumulation and toxic effects both in the environment and to humans. Two groups of organic chemicals that are partly listed as POPs are perfluoroalkyl substances (PFASs) and polycyclic aromatic hydrocarbons (PAHs). READ MORE

  3. 3. Ecotoxicological effects on a food-web exposed to pharmaceuticals : Uptake and effects of oxazepam, fexofenadine and a mixture of both in algae, zooplankton and sticklebacks.

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Anna Sundelin; [2015]
    Keywords : Bioconcentration; Bioaccumulation; Behaviour; Pharmaceutical mixtures.;

    Abstract : Complex mixtures of biologically active pharmaceutical residues continuously enter aquatic environments via wastewater, where it can affect species through preserved human drug targets or cause unexpected effects in non-target species. Benzodiazepines and antihistamines are two highly consumed groups of pharmaceuticals that have been shown to bioconcentrate in aquatic organisms and induce behavioural alterations affecting individual fitness. READ MORE

  4. 4. The antihistamine hydroxyzine and Odonata : Bioaccumulation and effects on predator-prey interactions between dragonfly and damselfly larvae

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Ellinor Bomark; [2014]
    Keywords : Aquatic insects Odonata predator-prey bioconcentration antihistamines;

    Abstract : Through wastewater entering aquatic environments, aquatic insects are continuously exposed to pharmaceuticals including neurologically active antihistamines. The antihistamine hydroxyzine has previously been found to lower activity in damselflies and to reach 2000 times the concentration of surrounding water in damselfly tissue. READ MORE

  5. 5. Association of hydrophobic organic contaminants to size fraction of natural humic substances : using ultrafiltration and high-performance liquid chromatography

    University essay from SLU/Dept. of Aquatic Sciences and Assessment

    Author : Kristina Tattersdill; [2011]
    Keywords : humic substance; high-performance size exclusion chromatography; ultrafiltration; pesticide; size fraction;

    Abstract : Ultrafiltration and high-performance size exclusion chromatography (HPSEC) were used to determine interactions between different size-fractions of natural humic substance and carbofuran, lindane, chlorpyrifos and PCB-105. Ultrafiltration, using filter MWCO size of 1 kDa and 100 kDa, showed an adsorption of pesticide to filter. READ MORE