Neutron Activation Analysis Applied to the Determination of Heavy Metals and Other Trace Elements in Sediments from Sepetiba Bay (RJ), Brazil

摘要: In this work, instrumental neutron activation analysis (INAA) was applied to the determination of elements As, Ba, Br, Ce, Co, Cr, Cs, Eu, Fe, Hf, La, Lu, Nd, Rb, Sc, Sm, Ta, Tb, Th, U, Yb, Zn in twenty eight bottom sediment samples from Sepetiba Bay, Rio de Janeiro, Brazil. With concentration data obtained, contour maps were prepared, by using Kriging method, show spatial distribution studied Bay. The Ta and showed similar behaviour sediments, with higher concentrations along northern coast bay, where fluvial water inputs are concentrated. rare earth Ba Bay indicates that these not deposited as contaminants. Dans ce travail, les suivants, La Yb et ont ete analyses par neutronique instrumentale dans vingt huit sediments fond la baie Sepetiba, Bresil. Par krigeage a partir des obtenues, nous avons etabli cartes repartition spatiale etudies baie. comportements similaires avec plus importantes le long cote nord baie, ou apports en eau fluviale sont concentres. Terres Rares indique que ces ne pas deposes comme polluants