RECENT DEVELOPMENTS FOR LOW LEVEL THORIUM AND NEPTUNIUM DETERMINATIONS IN ENVIRONMENTAL SAMPLES USING (γ, f) REACTION

摘要

The presence of actinides, and first of all their long-lived isotopes, at significant concentrations in ecosystems presents a major health hazard. It explains that attention, which is given to their determination in objects of an environment [1]. Aqueous transport is the most likely scenario for wide-spread actinide intrusion into the biosphere, one needs to known a content of actinides in natural waters. From this point of view, new methods for measuring the rather low levels of actinide elements must be employed [2].