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Abstract

The subcellular distribution of technetium (Tc) in leaves of spinach plants, grown in nutrient solutions contaminated with NH-4TcO-4, was assessed by differential centrifugation and gel filtration chromatography. Approximately 6% of the accumulated Tc, in a filtered homogenate, was pelleted by centrifugation at 12000 g. More than 10 Tc bio-organic complexes were distinguished in the supernatant fraction. Between 80 and 90% of these products had a molecular mass below 6000 g/mol. The presence of free TcO-4 in homogenized spinach leaves has been demonstrated, suggesting its transformation occurs after uptake and translocation towards the leaves.

Additional information

Authors: LEMBRECHTS J F, R.J.V.M. LAB. OF RADIATION RESEARCH, C-O ASSOCIATION EURATOM-ITAL, WAGENINGEN (THE NETHERLANDS);DESMET G M, R.J.V.M. LAB. OF RADIATION RESEARCH, C-O ASSOCIATION EURATOM-ITAL, WAGENINGEN (THE NETHERLANDS);OVERBEEK H R.J.V.M. LAB. OF RADIATION RESEARCH, C-O ASSOCIATION EURATOM-ITAL, WAGENINGEN (THE NETHERLANDS), R.J.V.M. LAB. OF RADIATION RESEARCH, C-O ASSOCIATION EURATOM-ITAL, WAGENINGEN (THE NETHERLANDS)
Bibliographic Reference: ENVIRONMENTAL AND EXPERIMENTAL BOTANY, VOL. 25 (1985), NO.4, PP. 355-360
Record Number: 1989124124300 / Last updated on: 1987-01-01
Category: PUBLICATION
Available languages: en