Details zur Publikation

Referenztyp Zeitschriften
DOI / URL
Titel (primär) Distribution of phosphorus and heavy metals in the sediments of lake Arendsee (Altmark, Germany)
Autor Zachmann, D.W.; van der Veen, A.; Müller, S.;
Journal / Serie Studia Quaternaria
Erscheinungsjahr 2004
Department FLOEK;
Band/Volume 21
Sprache englisch;
Abstract

Lake Arendsee is a dimictic lake with a surface area of about 5 km² and a maximum depth of about 50 m. Due to the input of untreated sewage rich in P the lake turned to eutrophic state in the 1950s. Sediment cores were taken by different methods: short cores (0–50 cm) with a gravity corer, long cores (0–160 cm) with a piston corer. The sediments were sliced into subsamples under argon atmosphere in a glove box. The samples were analysed by ICP-OES and ICP-MS on main and trace elements after digestion in either aqua regia or HF-HNO3-HClO4. Analogous cores were dated by varve counting and radiometric methods. The enforced build-up of industry and agriculture since the 1950s is displayed in the sediment composition. The P concentrations increase from a background of about 600 ppm (oligotrophic state of the lake) to more than 4,000 ppm in a depth of 14 cm, which corresponds to the 1970s. In 1976, a hypolimnetic withdrawal and a sewage plant were built. Above the corresponding depth the concentrations of P and heavy elements decrease in the sediments but are still by far higher than the background values. The bonding form analyses document mineral equilibration by diagenetic processes. Stable sulfidic bonding forms become predominant with increasing depth.

ID 4671
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=4671
Zachmann, D.W., van der Veen, A., Müller, S. (2004):
Distribution of phosphorus and heavy metals in the sediments of lake Arendsee (Altmark, Germany)
Studia Quaternaria 21 , 179 - 185