Grain-size analysis and heavy metals distribution in sediment fractions of Lake Markermeer in the Netherlands

2014

English

Lake Markermeer is situated in the central part of the Netherlands and before 1976 it had an open connection with River Rhine that was believed to have compromised its sediment quality with the fine sediment having the highest concentration of the heavy metals. This study therefore sought to assess the distribution of the sediment grain size particles and the corresponding distribution of six heavy metals (Mn, Cd, Zn, Ni, Cu, Pb and Cr) in three sediment fractions (> 0.5 mm, 45 μm - 0.5 mm and < 45 μm) of Lake Markermeer in the Netherlands. This was done by taking sediment samples from vertical cores using Beeker Core Borer. Grain-size analysis was done through sieving; digestion and analysis of heavy metal content using Inductively Coupled Plasma Atomic Emission Spectroscopy were carried out. The results showed low and uneven grain-size distribution throughout the sediment cores probably due to disturbances from wave action. The highest concentrations of the heavy metals were found in the finest grain-size (< 45 μm) due to larger surface area and higher adsorption capacity.

Adiyiah, J.; Acheampong, M. A.; Ansa, E. D. O.; Kelderman, P.