Essays about: "Aquatic toxicity"

Showing result 1 - 5 of 34 essays containing the words Aquatic toxicity.

  1. 1. Ecological risk assessment of pesticide use in rice farming in the Mekong Delta , Vietnam

    University essay from Stockholms universitet/Institutionen för naturgeografi

    Author : Bubaraye Ohiosimuan Dirikumo; [2023]
    Keywords : Pesticides; Ecological Risk Assessment ERA ; rice farming; Mekong Delta; PRIMET Model; Exposure Toxicity Ratio ETR ; species sensitivity distribution SSD ; predicted environmental concentrations PECs ;

    Abstract : Pesticide use in rice farming is a common practice in the Mekong Delta and poses ecological risks to aquatic organisms, the environment, and human health. This study focused on the ecological risk assessment of pesticide use in rice farming using the PRIMET model as a decision support tool to evaluate the risks of pesticide exposure, ecotoxicity, and risk characterization, as well as employing the species sensitivity distribution (SSD) assessment model to calculate the potentially affected fraction (PAF) of species based on the computed predicted environmental concentrations (PECs) from PRIMET. READ MORE

  3. 2. SINGLE AND COMBINED EXPOSURE OF POLYSTYRENE NANOPARTICLES AND NORTH SEA MARINE OIL IN TWO IN VITRO FISH MODELS

    University essay from Göteborgs universitet / Institutionen för biologi och miljövetenskap

    Author : Monica Olsson; [2022-10-05]
    Keywords : Polystyrene nanoparticles; crude oil; combined toxicity; cytotoxicity; oxidative stress;

    Abstract : The awareness of micro-and nanoplastic pollution and its impact on the marine ecosystem has increased over the last decade. Nanoplastics may affect aquatic organisms since their small size and high surface-to-volume ratio increases their bioavailability and ability to cross biological membranes. READ MORE

  4. 3. HAZARD ASSESSMENT OF 1 932 INDUSTRIAL CHEMICALS REGISTERED WITHIN REACH

    University essay from Göteborgs universitet / Institutionen för biologi och miljövetenskap

    Author : Andreas Hellohf; [2022-08-08]
    Keywords : chemical risk assessment; industrial chemicals;

    Abstract : This report was conducted to examine if industrial chemicals present a hazard to the aquatic environment in Europe. Industrial chemicals produced within or imported to the European Union are regulated according to the REACH Regulation and most of them must be registered in the ECHA database. READ MORE

  5. 4. Toxicological analysis of Pyraclostrobin and Cyprodinilon Zebrafish larvae

    University essay from Örebro universitet/Institutionen för naturvetenskap och teknik

    Author : Kim Yeju; [2022]
    Keywords : gene expression; mixture effect; toxicity; pesticides; stress response;

    Abstract : Cyprodinil and pyraclostrobin are widely used pesticides to protect many plants from attack of microorganisms and fungal diseases. Although cyprodinil and pyraclostrobin exist in the aquatic environment at low concentration, their leftovers in the ecosystems lead to oxidative damage and interfere development in aquatic animals at environmental-relevant concentration. READ MORE

  6. 5. Characterization of PLA Nanoplastics, and Their Effects on Daphnia magna

    University essay from Lunds universitet/Centrum för analys och syntes

    Author : Melinda Rydberg; [2022]
    Keywords : Polylactic acid; Polylactide; PLA; Nanoplastic; Daphnia magna; Toxicity; Polymer Technology; Chemistry; Earth and Environmental Sciences;

    Abstract : As plastic pollution in aquatic environments keeps happening it has become more and more important to learn more about nanoparticles. Bio-based and biologically degradable plastics, such as polylactic acid (PLA), are gaining popularity and it is therefore important to determine whether they break down into nanoplastics or not. READ MORE