Heavy metal detection in the sediment – water components of the Sado Estuary by multielemental analysis

Abstract

Heavy metals were analysed in sediments and waters of Sado Estuary to estimate the potential environmental impact of several industries and urban discharge located in the north channel of the estuary. Cr, Fe, Ni, Cu, Zn, Mo, As, Ga, Hg and Pb were determined in bottom waters and in surface sediments of the estuary by PIXE method. A proton beam induced by a 2 MeV Van de Graaff accelerator and subsequent X ‐ ray emission was used. Sediment concentration factors were evaluated and geographical distribution in the estuary, of some elements are shown.