Affiliation:
1. INEP- Institute for the Application of Nuclear Energy, Belgrade
2. Faculty of Physical Chemistry, Belgrade
Abstract
Desorption of 137Cs from Cetraria islandica (L.) Ach. lichen was performed by
five consecutive desorptions with five identical solution volumes. Solutions
of H2SO4, HNO3 and their mixtures, with pH 4.61, 5.15 and 5.75 were used for
desorption. The desorbed amount of 137Cs (average value, all solutions used)
from lichen, for a given pH value was 49.2% for pH 4.61; 47.0% for pH 5.15
and 47.6% for pH 5.75. The obtained values of the desorbed amount of 137Cs
from lichen are in accordance with the data obtained in earlier work, when
46.2 % 137Cs was desorbed from lichen for pH 3.75, and 47.2% was desorbed for
pH 2.87. A higher percentage of 59.8%, obtained for pH 2.00 indicates
increased activity of H+ ions. The amount of desorbed 137Cs from lichen using
solutions corresponding to acid rain cannot be lower than the stated values
as they contain other substances besides the acid solutions used in this
work.
Publisher
National Library of Serbia
Subject
General Chemical Engineering,General Chemistry
Cited by
3 articles.
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