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TOTAL DISSOLVED AND BIOAVAILABLE METALS AT LAKE TEXOMA MARINAS
Citation:
An, Y. AND D H. Kampbell*. TOTAL DISSOLVED AND BIOAVAILABLE METALS AT LAKE TEXOMA MARINAS. ENVIRONMENTAL POLLUTION. Elsevier Science Ltd, New York, NY, 122(2):253-259, (2003).
Description:
Dissolved metals in water and total metals in sediments have been measured at marina areas in Lake Texoma during June 1999 to October 2001, and October 2001, respectively. The metals most often found in the highest concentrations in marina water were Na and Ca, followed by Mg and K. Elevated Cu levels detected in lake water appeared to be associated with the Cu based anti-fouling paint used on boats. Metal concentrations in sediment were much higher than in water. The relative order of the concentration in sediment was Ca >Al > Fe > K > Mg > Na. Elevated Cu level at specific locations appeared to be associated with local anthropogenic sources of boat repair activites. There were posititive relationships between several metal elements in water and sediment. Metals in sixteen sediments from lake marinas were extracted with a weak electrolyte solution (0.1 M Ca(NO3)2) to predict the bioavailability of metals. Among the five heavy metals studied (As, Cd, Cr, Cu, and Zn), Cu was the most bioavailable in Lake Texoma marinas.