Separation of W from Ta, Hf, Lu and Mo by BPHA-C5H11OH/HCl extraction system

Separation of W from Ta, Hf, Lu and Mo by BPHA-C₅H₁₁OH/HCl extraction system

Model experiments for chemical study of seaborgium, the 106th element

LI Zong-Wei，

SCHÄDEL M，

BRÜCHLE W，

JÄGER E，

SCHAUSTEN B，

SCHIMPF E，

KRATZ J V，

STRUB E

Nuclear Science and Techniques

Vol.12, No.2

pp.87-93

Published in print 01 May 2001

CLC：O615.4+1, O614.61+3, O652.62

24800

In the batch experiment with W, Ta, Hf, Lu and Mo as radiotracers, a new rapid radiochemical isolation procedure for element tungsten has been developed by using radiochemical separation method and γ spectrum measurement technique. With Voltalef powder carried 2% (W/V) BPHA(Benzoylphenylhydroxylamine)-C₅H₁₁OH (iso-amyl-alcohol) organic solution, radioactive W was adsorbed on the Voltalef column in the 4 mol/L hydrochloric acid system. Hf, Lu and Mo fractions passed through the Voltalef column rapidly and partial Ta activities retained on the Voltalef column, respectively. Following this, W fraction was eluted completely with 1%Na₃C₆H₅O₇(sodium citrate)-5%(W/V) NH₄OH solution and no Hf, Lu, Ta and Mo activities passed through the Voltalef extraction chromatographic column. The procedure was simultaneously used to isolate W from Er target bombarded with a low energy ¹²C beams. By means of this separation system, it is one of the possible way to develop an isolation procedure of Sg, supposing the chemical property of Sg is similar to that of tungsten.

W, Ta, HfLu and Mo tracersVoltalef-BPHA-C5H11OHSeparation of SgExtraction chromatography

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