The release and migration of activation products from corrosion-resistant metal specimens in marine sediments
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An investigation of the release of Ni-63, Co-60, and Fe-55 from Inconel 600 and 347SS stainless steel specimens implanted in marine sediment for one year is described. Radiochemical analysis of the sediment from overcores of the metal specimens permits estimation of integrated activities, release rates, and diffusion coefficients of the three radionuclides. Disturbance of the sediment upon recovery limits the values to order of magnitude estimates. The redox chemistry of the sediments is characterized by measurement of several naturally occurring oxidizing agents and is correlated with the behavior of the radionuclides. Details of the deployment, sampling and analytical procedures are also given.
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Kalnejais, Linda H. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2005-09)The fate of trace metals in contaminated coastal sediments is poorly understood, yet critical for effective coastal management. The aim of this thesis is to investigate and quantify the mechanisms leading to the release ...
Martin, William R. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1985-04)The focus of this thesis is on rates of transport of metals both across the sediment/water interface and within the sediment column of nearshore sediments. The early diagenesis of several first-row transition metals exhibiting ...