The Existence and Removal of Evaporable 137Cs-Containing Compound(S) From the Extract of Lichen Cetraria Islandica

The aim of the work described here was to investigate the existence of evaporable 137 Cscontaining compound(s) in lichen and to suggest a possible way of dealing with a phenomenon during lichen exploitation. A sample of lichen, Cetraria islandica, was submitted to aqueous extraction and the extract...

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Bibliographic Details
Published in:Chemistry and ecology 1998-05, Vol.14 (2), p.143-149
Main Authors: NEDIC, O, STANKOVIC, A, STANKOVIC, S
Format: Article
Language:English
Subjects:
activated charcoal
adsorption
Animal, plant and microbial ecology
Applied ecology
Biological and medical sciences
Caesium
Ecotoxicology, biological effects of pollution
Effects of pollution and side effects of pesticides on plants and fungi
evaporation
Fundamental and applied biological sciences. Psychology
lichen
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Summary:The aim of the work described here was to investigate the existence of evaporable 137 Cscontaining compound(s) in lichen and to suggest a possible way of dealing with a phenomenon during lichen exploitation. A sample of lichen, Cetraria islandica, was submitted to aqueous extraction and the extract was monitored to be 137 Cs-radioactive. It was heated according to the experimental schedule and the resulting vapour passed over a layer of activated charcoal. By measuring the decrease in the radioactivity content of the lichen extract after heating and the radioactivity of the adsorbent it was found that a significant amount of the extracted 137 Cs could be evaporated and bound to the charcoal adsorbent (40.6%). If not captured, this radiocaesium may lead to air pollution, especially of immediate breathing space.
ISSN:0275-7540
1029-0370
DOI:10.1080/02757549808035549