Factors Influencing the Uptake of Technetium By the Brown Alga Fucus-serratus

Abstract Various experiments on the brown alga Fucus serratus , under light, in darkness, at two different temperatures (4 and 20°C) and after heat-inactivation, suggest that the accumulation of technetium is a physiologically controlled process. This hypothesis is supported also by chromatographic analyses of algal extracts, in which the proportion of technetium bound to organic molecules was found to be higher under light than in darkness or at 4°C.