Natural and Anthropogenic Input of Heavy Metals in Sediments from Bahía Blanca Estuary (Argentina)

LAURA GRECCO,; ANGEL MARCOS; EDUARDO GOMEZ; SANDRA BOTTE; JORGE MARCOVECCHIO

JOURNAL OF COASTAL RESEARCH

COASTAL EDUCATION & RESEARCH FOUNDATION

Lugar: Florida; Año: 2004 vol. SI p. 1021 - 1025

0749-0208

The geochemistry, mineralogy and grain size distribution of several estuarine sediment samples from potentially man-influenced areas and zones without such influence were analyzed to determine the natural heavy metal content in order to evaluate the man-originated impact into the Bahía Blanca estuarine environment. It is determined that with the exception of those places where untreated sewage outfall occurs, a direct relationship between the percentage of the clay size fraction (