Trace metals

Abstract

From the Abstract: “This report provides an overview of four years (1976–1980) of trace metal investigations conducted as a part of a larger multidisciplinary, marine, environmental assessment program of the Buccaneer gas and oil field. Concentrations of Ag, Al, As, Ba, Be, Cd, Co, Cr, Cu, Hg, Fe, Mn, Ni, Pb, Sb, Se, Sr, Tl and Zn have been determined in surficial sediments, subsurface sediments, suspended particulate matter, seawater, produced brine, crude oil and various tissues of biological organisms collected seasonally near two petroleum production platforms. Concentrations of Ba, Cd, Cr, Co, Cu, Mn, Pb, Sr, Hg and Zn in surficial sediments have been related to the platforms or activities on them. Trace metal concentrations in suspended particulate matter are higher than in bottom sediments. Seawater trace metal concentrations are within the range reported for shelf waters. Produced brine discharge have concentrations of Ba, Cd, Cr, Fe, Hg, Mn, Sr, Tl and Zn that are higher than seawater and vary with time. No evidence of excessive bioaccumulation of trace metals in marine organisms from the area around the production platforms was established. Seasonal variations of trace metals were observed in various marine organisms.”