E. Piron et A. Domard, INTERACTIONS BETWEEN CHITOSAN AND ALPHA-EMITTERS - PU-238 AND AM-241, International journal of biological macromolecules, 23(2), 1998, pp. 121-125
This paper deals with the first study published on the interactions be
tween chitosan and two radioactive elements (alpha emitters): Pu-238 a
nd Am-241. The authors determined the optimal experimental conditions
for each of them (pH, ionic strength (FI), carbonate concentration) an
d attempted to explain the mechanism of interaction. The study of the
nature and the percentage of the metallic ionic species present in sol
ution as a function of the experimental conditions was carried out by
means of the TOT software for Am-241. The authors showed a good fixati
on of Pu-238 and Am-241 On chitosan for pH's between 11-12, with the b
est results for Am-241. Nevertheless, an increase of the FI or the add
ition of a complexant of these alpha emitters induced a decrease of th
e interactions with chitosan. (C) 1998 Elsevier Science B.V. All right
s reserved.