Influence of diagenetic processes on the distribution and accumulation of major and trace elements in the sediments of the Scheldt estuary

Sediment cores were carefully collected with a box corer in three areas of the Scheldt estuary (Antwerpen, Doel, Terneuzen) in August and repeated in December. The 20 upper cm were sliced under a nitrogen atmosphere in 0.5-1 cm thick layers. The slices were then centrifuged in order to separate the interstitial water from the solid phase. The following elements were determined in the solid phase Si, Al, Fe, Ca, Mg, Mn, Co, Zn, Cd, Cu, Pb, Corg and Norg. In addition, the following parameters were also measured in the pore waters: salinity, alkalinity, DIC, pH, DOC, NO 3 , NH 4 , PO 4 , Si, Fe,... Mehr ...