Preparation of 'high specific activity' radiochemical forms of vanadium manganese and thallium for metallo-toxicological studies

摘要

In this paper are presented the production methods for very "high specific activity" radionclides (HSA-RN) of vanadium manganese and thallium which have been developed in out laboratories for labelling different chemical forms of these elements present in the echo-systms in ultra-trace amounts for methallo-toxiclogical and bio-kinetic studies Use was made of dboth cyclotron and thermal nuclear reactor If the nuclear reaction product has at omic number different from irradiated targeet it is possible separation tghe radiocative nuclide from irradiated target without addition of isotopic cativity As is very high adn can reach values close to the theoretical Carrier Free one CF.The experimental determination of specific activity chemical adn radiochemical purities is madatory for all these kinds of applications.