Cover Image

Uptake and distribution of technetium in several marine algae [electronic resource]

Saved in:

Bibliographic Details
Online Access:	Online Access
Corporate Author:	Oak Ridge National Laboratory (Researcher)
Format:	Government Document Electronic eBook
Language:	English
Published:	Oak Ridge, Tenn. : distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1983.
Subjects:	Beta Decay Radioisotopes. Days Living Radioisotopes. Intermediate Mass Nuclei. Isomeric Transition Isotopes. Beta-plus Decay Radioisotopes. Odd-even Nuclei. Algae. Mathematical Models. Biological Accumulation. Uptake. Electron Capture Radioisotopes. Isotopes. Tissue Distribution. Isomeric Nuclei. Technetium Isotopes. Technetium 95. Distribution. Nuclei. Plants. Radioisotopes. Hours Living Radioisotopes. Radiation, Thermal, And Other Environ. Pollutant Effects On Living Orgs. And Biol. Mat..

Description
Abstract:	The uptake or chemical form of technetium in different marine algae (Acetabularia, Cystoseira, Fucus) has been examined and a simple model to explain the uptake of technetium in the unicellular alga, Acetabularia, has been conceptualized. At low concentrations in the external medium, Acetabularia can rapidly concentrate technetium. Concentration factors in excess of 400 can be attained after a time of about 3 weeks. At higher mass concentrations in the medium, uptake of technetium by Acetabularia becomes saturated resulting in a decreased concentration factor (approximately 10 after 4 weeks). Approximately 69% of the total radioactivity present in /sup 95m/Tc labelled Acetabularia is found in the cell cytosol. In Fucus vesiculosus, labelled with /sup 95m/Tc, a high percentage of technetium is present in soluble ionic forms while approximately 40% is bound, in this brown alga, in proteins and polysaccharides associated with cell walls. In the algal cytosol of Fucus vesiculosus, about 45% of the /sup 95m/Tc appears to be present as anionic TcO⁻₄ and the remainder is bound to small molecules. 8 references, 5 figures, 1 table.
Item Description:	Published through the Information Bridge: DOE Scientific and Technical Information. 01/01/1983. "conf-8309195-2" "DE85001113" International symposium on the behavior of long-lived radionuclides, LaSpezia, Italy, 28 Sep 1983. Garten, C.T. Jr.; Myttenaere, C.; Gerber, G.B.; Vandecasteele, C.M.; Cogneau, M.; Bonotto, S.; van der Ben, D.; Van Baelen, J. Centre d'Etude de l'Energie Nucleaire, Mol (Belgium) Institut Royal des Sciences Naturelles de Belgique, Brussels.
Physical Description:	Pages: 16 : digital, PDF file.