The presence of heavy metals in the sediment of the Limfjord and the capture ability of the sediment.
Author
Larsen, Johannes Albeck
Term
4. term
Education
Publication year
2022
Submitted on
2022-06-09
Pages
57
Abstract
Heavy metals enter the environment from many sources, including human activities such as protective paints on ships and emissions from transport and related infrastructure. These metals can be found in marine sediments, but their concentrations differ from place to place. In the Limfjord, previous work has shown such variation. This project investigates which local factors explain these differences and how heavy metal concentrations relate to site conditions. We focused on the amount of organic matter in the sediment and found a strong correlation between organic matter and heavy metal concentrations. We also examined the depth and placement of sampling locations; these factors were linked to variations in organic matter. By contrast, the stability of metal species (their chemical forms) had little effect on the overall concentration of heavy metals.
Tunge metaller kommer ud i miljøet fra mange kilder, herunder menneskelige aktiviteter som beskyttende maling på skibe og emissioner fra transport og relateret infrastruktur. Disse metaller kan findes i marint sediment, men koncentrationerne varierer fra sted til sted. I Limfjorden er sådan variation tidligere blevet påvist. Dette projekt undersøger, hvilke lokale forhold forklarer disse forskelle, og hvordan koncentrationen af tunge metaller hænger sammen med de lokale forhold. Vi fokuserede på mængden af organisk materiale i sedimentet og fandt en stærk korrelation mellem organisk stof og koncentrationen af tunge metaller. Vi undersøgte også prøvetagningsdybde og placering; disse faktorer var forbundet med variationer i organisk stof. Derimod havde stabiliteten af metallers kemiske former (metalspecies) lille effekt på den samlede koncentration af tunge metaller.
[This apstract has been rewritten with the help of AI based on the project's original abstract]