Effects of leaf aging on the distribution and metabolism of technetium-99 in Spinacea oleracea L

Results of gelfiltration chromatographic separation of the major groups of technetium (Tc) compounds in spinach leaves ( Spinacea oleracea L. cv. Verbeterd Breedblad) are described. When grown on a nutrient solution contaminated with NH 4TcO 4 (10 −8 to 10 −6 M), free TcO 4 − was present in the leav...

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Bibliographic Details
Published in:Environmental and experimental botany 1985, Vol.25 (4), p.361-368
Main Authors: Lembrechts, J.F., Desmet, G.M.
Format: Article
Language:English
Subjects:
Agrochemicals products
Animal, plant and microbial ecology
Applied ecology
Biological and medical sciences
Ecotoxicology, biological effects of pollution
Fundamental and applied biological sciences. Psychology
leaf age
metabolism
Other agrochemicals used in plant protection (herbicides, fungicides, etc.)
Phytopathology. Animal pests. Plant and forest protection
Pollution effects and side effects of agrochemicals on crop plants and forest trees. Other anthropogenic factors
Pollution effects. Side effects of agrochemicals
radionuclides
Spinacia oleracea
technetium
Terrestrial environment, soil, air
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Summary:Results of gelfiltration chromatographic separation of the major groups of technetium (Tc) compounds in spinach leaves ( Spinacea oleracea L. cv. Verbeterd Breedblad) are described. When grown on a nutrient solution contaminated with NH 4TcO 4 (10 −8 to 10 −6 M), free TcO 4 − was present in the leaves. Its level remained fairly constant as the leaves grew older and was proportional to the TcO 4 − content of the nutrient solution. The relative rates of uptake and incorporation were highest in the young leaves. Technetium was essentially (> 75%) incorporated in low molecular weight compounds (
ISSN:0098-8472
1873-7307
DOI:10.1016/0098-8472(85)90034-6