Investigation of extraction and back-extraction behaviour of platinum(IV) with rubeanic acid in tributyl phosphate, with tributyl phosphate and with thenoyltrifuoroacetone in n-butyl alcohol-acetophenone by means of platinum-191 radiotracer for platinum-enrichment purposes
1993; Elsevier BV; Volume: 281; Issue: 1 Linguagem: Inglês
10.1016/0003-2670(93)85349-o
ISSN1873-4324
AutoresM. Parent, R. Cornelis, R. Dams, F. Alt,
Tópico(s)Advanced Chemical Sensor Technologies
ResumoAbstract Using 191 Pt radiotracer, the liquid-liquid extraction behaviour of Pt(IV) from HCl medium with rubeanic acid in tributyl phosphate (TBP), with tributyl phosphate and with thenoyltrifluoroacetone (TTA) in n -butyl alcohol-acetophenone was examined. The effects of acidity, shaking time and Pt concentration were studied, in addition to the subsequent back-extraction. Optimum extraction recoveries were found when using 3 M HCl for TBP and 4 M HCl for TTA. Ammonia solution (2 M) yielded the best recovery for back-extraction. In order to evaluate the procedure in the presence of a matrix, some biological and environmental materials were spiked with 191 Pt and the recovery of the radiotracer in the different steps was investigated.
Referência(s)