[en] A method of analysis was developed for U-238, U-234, Th-232, Th-230, Th-228, Ra-228, Ra-226, Pb-210 and Po-210 starting from a same sample-solution. The chemical separation U/Th/Pb/Po/Ra was based on chromatographic extraction. (E.G.)
[pt]
Desenvolveu-se um metodo de analise para U-238, U-234, Th-232, Th-230, Th-228, Ra-228, Ra-226, Pb-210 e Po-210, partindo de uma mesma amostra de solucao. A separacao quimica U/Th/Pb/Po/Ra foi baseada na extracao por cromatografia. (E.G.)