Geochemistry of major elements and trace metals in suspended matter of the Scheldt estuary, southwest Netherlands

The low-temperature geochemical cycle of iron: From continental fluxes to marine sediment deposition

“…Trefry and Presley (1982) found that the Fe/Al ratio of suspended particulates from the Mississippi remained constant (0.53ϩ/Ϫ0.01) through an annual discharge cycle. Similarly riverine particulates from the Scheldt (Zwolsman and van Eck, 1999) showed little seasonal variation in Fe/Al (1.02ϩ/-0.06). Longer term variations have been examined by Horowitz (personal communication), who recorded the following mean and standard deviations for Fe/Al ratios in suspended sediment collected at approximately monthly intervals from autumn 1995 to spring 2002 in the Ohio (0.55ϩ/Ϫ0.03), Mississippi (0.46ϩ/Ϫ0.05), Missouri (0.42ϩ/Ϫ0.06), Atchafalaya (0.48ϩ/Ϫ0.05), Willamette (0.71ϩ/Ϫ0.06) and Columbia (0.57ϩ/Ϫ0.06) rivers in the United States.…”

Barium uptake into the shells of the common mussel (Mytilus edulis) and the potential for estuarine paleo-chemistry reconstruction

“…5C). However, particulate Ba data from the Schelde, which show a peak in the spring only at mid-salinities (Zwolsman and van Eck, 1999), do not agree with this scenario; but a more detailed sampling campaign is needed to be conclusive. µmol/mol, which is clearly not the case (Fig 5A).…”

Spatiotemporal Distributions of Sr and Ba along an Estuarine River with a Large Salinity Gradient to the Gulf of Mexico

“…One of the processes is the adsorption-desorption of trace metals in estuarine mixing zones. Salinity and pH have been found to strongly affect mobility and flux rates of trace metals [13] when they are carried by rivers to various estuarine/coastal systems around the world; for instance, in the Galveston Bay estuary in Texas [14], the San Francisco Bay Estuary in California [15], the Changjiang Estuary in China [16,17], the Bang Pakong Estuary in Thailand [18], the Scheldt Estuary in the Netherlands [19], and the Conwy Estuary in North Wales [20]. The ongoing saltwater intrusion in the world's estuaries may shift metal mobilization and precipitation landwards, the occurrence and effects of which are not well investigated.…”