Sökning: "Mercury methylation"

Visar resultat 1 - 5 av 15 uppsatser innehållade orden Mercury methylation.

  1. 1. Newly inundated forest landscapes - hotspots for mercury in water and benthic fauna

    Master-uppsats, SLU/Dept. of Aquatic Sciences and Assessment

    Författare :Kirstine Evald Andersson; [2023]
    Nyckelord :Wetland restoration; Inundation; Mercury cycling; Beaver impoundments; Aquatic biogeochemis-try;

    Sammanfattning : Mercury (Hg) is a widespread contaminant in high-latitude aquatic ecosystems, where it can undergo microbial transfor-mation into toxic methylmercury (MeHg). Due to its chemical properties, MeHg tends to accumulate in the aquatic food chain and will eventually end up in predatory species at the top of the terrestrial food web. LÄS MER

  3. 2. Biogeochemistry and Peat Properties of Restored Peatlands

    Master-uppsats, SLU/Dept. of Forest Ecology and Management

    Författare :Pelle Belaieff Kronborg; [2022]
    Nyckelord :Drainage; Bulk density; Nitrogen; Carbon; Stable isotopes;

    Sammanfattning : Globally, peatlands comprise the most important soil organic carbon pool storing approximately one third of all terrestrial soil carbon. Drainage can turn peatlands to net sources of carbon dioxide. Peatlands have historically been drained to increase the productivity of agriculture and forestry. LÄS MER

  4. 3. Inhibited surface-thiols in Geobacter sulfurreducens : Mercury uptake and methylation rates

    Master-uppsats, Umeå universitet/Kemiska institutionen

    Författare :Andreas Granström; [2021]
    Nyckelord :;

    Sammanfattning : Due to daily human (anthropogenic) industrial activity, a lot of elemental mercury (Hg0) has been released to the atmosphere. The mercury can then spread globally, since mercury has the ability to remain atmospheric for up to a year. When mercury deposits, it can end up in anaerobic environments such as sediments and soil. LÄS MER

  5. 4. HgII uptake in Geobacter sulfurreducens spheroplasts : Thiols’ role in Hg partitioning and methylation

    Master-uppsats, Umeå universitet/Kemiska institutionen

    Författare :Andreas Eriksson; [2021]
    Nyckelord :;

    Sammanfattning : Mercury (Hg) is a naturally occurring trace element and pollutant that is ubiquitous in aquatic ecosystems. All Hg species are hazardous, but methylmercury (MeHg) is the most alarming due to its neurotoxicity, teratogenicity, and bioaccumulation in the food web. LÄS MER

  7. 5. Abiotic methylation of inorganic mercury in natural waters : Method development for determination of monomethylmercury in natural waters by GC-ICP-MS

    Magister-uppsats, Umeå universitet/Kemiska institutionen

    Författare :Thu-Hoai Nguyen; [2018]
    Nyckelord :;

    Sammanfattning : .... LÄS MER