Essays about: "dichlorodiphenyltrichloroethane"

Found 5 essays containing the word dichlorodiphenyltrichloroethane.

  1. 1. Reproductive status of the female Baltic ringed seal

    University essay from SLU/Dept. of Clinical Sciences

    Author : Alexandra Odevall; [2019]
    Keywords : Baltic ringed seal; occlusion; PCB; DDT; reproduction;

    Abstract : The population of ringed seals in the Baltic Sea was estimated to around 190 000–220 000 individuals in the 1900’s and decreased to approximate 5 000 in the late 1970s. The number of pregnant females also decreased during this time. READ MORE

  3. 2. Probabilistic ecological risk assessment of secondary poisoning from DDT

    University essay from Lunds universitet/Miljövetenskaplig utbildning

    Author : Alice Rundegren; [2019]
    Keywords : probabilistisk riskbedömning; toppredatorer; DDT; diklordifenyltrikloretan; plantskola; skogsplantskola; artkänslighetsfördelning; bioackumulering; förorenad mark; indirekt exponering; Monte Carlo simulering; probabilistic risk assessment; plant nursery; species sensitivity distribution; polluted soil; indirect exposure; bioaccumulation; Monte Carlo simulation; dichlorodiphenyltrichloroethane; Earth and Environmental Sciences;

    Abstract : Although prohibited since decades, dichlorodiphenyltrichloroethane (DDT) and its metabolites still remain in the soil and pose a threat to ecosystems, where especially birds are susceptible to toxic effects. In this thesis, a model developed in the 1990s was used and updated in order to estimate the risks of DDT to top predators at a forest-plant nursery site. READ MORE

  4. 3. Spatial distribution of persistent organic pollutants (POPs) in sediments contaminated by fiber material from pulp and paper industries

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

    Author : Gabriel Dupaul; [2018]
    Keywords : PCB; DDT; HCB; fiberbank; fiber-rich sediment; sediment; Sweden; Västernorrland; Ångermanälven; Gulf of Bothnia; Baltic sea;

    Abstract : Sweden has had a long history of forestry activities together with pulp and paper operations. Historical discharges of organic-rich wastewater from pulp and paper factories have resulted in formation of large fiberbanks on the seafloor, which lately have been found to be contaminated with persistent organic pollutants (POPs). READ MORE

  5. 4. Spreading of persistent organic pollutants from fiber bank sediments

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

    Author : Lisa Vogel; [2015]
    Keywords : persistent organic pollutants; PCB; DDT; HCB; fiber bank; paper and pulp; POM; log Kd; bioaccumulation; pore water concentration; Marenzelleria spp.; Saduria entomon;

    Abstract : Discharge of untreated wastewater from paper and pulp industries have led to large environmental impacts on the coastal sediments in Västernorrland, Sweden. Dissolved fibers caused the formation of large fiber banks and fiber influenced sediment areas, which proved to be highly affected by contamination with persistent organic pollutants (POPs). READ MORE

  6. 5. PCB, immunosuppression och ökad mortalitet hos marina däggdjur

    University essay from SLU/Dept. of Biomedical Sciences and Veterinary Public Health

    Author : Johanna Grundin; [2014]
    Keywords : PCB; polyklorerade bifenyler; immunsystemet; immunosuppression; marina däggdjur ; polychlorinated biphenyls; immune system; marine mammals;

    Abstract : Epizootier som drabbat marina däggdjur och lett till storskaliga dödsfall har uppmärksammats runt om i världen de senaste decennierna. Höga halter av persistenta miljökontaminanter såsom DDT (diklordifenyltrikloretan) och PCB (polyklorerade bifenyler) har uppmätts hos djur som drabbats. READ MORE