par Deutsch, Marie Sarah 
;Nikolic, Milan
Référence Bulletin des Sociétés chimiques belges, 64, 5-6, page (264-274)
Publication Publié, 1955
;Nikolic, MilanRéférence Bulletin des Sociétés chimiques belges, 64, 5-6, page (264-274)
Publication Publié, 1955
Article révisé par les pairs
| Résumé : | A solution of Th‐234 from Uranyle nitrate was prepared for the use as tracer of its α emitting isotopes Th‐230, 228, 232. The aim of the work was to obtain Th‐234 containing as little as possible α emitting elements. U was separated from Th by ether extraction. The impurities present in the solution of Th‐234 are: — U due to incomplete separation. — Th‐230 growing from U‐234 and chemically inseparable frm U‐234 — U‐234 formed by desintegration of Th‐230 The most favourable conditions for obtaining a solution of Th‐234 with high radioactive purity are discussed. The preparation of a Th‐234 solution with a ratio α β < 1,8 10−6 is described in detail. This solution can be used as radiotracer in measuring quantities of Th‐230 (Ionium) as low as 10−11 g. Copyright © 1955 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim |
