| The results of a preliminary study of trace element concentrations in the Zaire River and estuary suspended sediments are presented. Zaire River concentrations show a close agreement with those observed in other rivers of the world (including Magdalena and Parana). Within the mixing zone, lanthanides, Th, Sc, Hf and Rb remain nearly constant, whereas Cr, Co, Ni, Cu, Zn and Pb concentrations show much more scattering and are either constant or increasing. This last distributions differ significantly from the results of studies conducted in partially mixed estuaries. |
