Extraction of lead with nitrobenzene solution of strontium bis-1,2-dicarbollylcobaltate in the presence of 15-crown-5

Authors
Makrlik, E Vanura, P Beckova, V
Citation
E. Makrlik et al., Extraction of lead with nitrobenzene solution of strontium bis-1,2-dicarbollylcobaltate in the presence of 15-crown-5, J RAD NUCL, 241(3), 1999, pp. 659-661
Citations number
9
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
ISSN journal
02365731 → ACNP
Volume
241
Issue
3
Year of publication
1999
Pages
659 - 661
Database
ISI
SICI code
0236-5731(199909)241:3<659:EOLWNS>2.0.ZU;2-A
Abstract
From extraction experiments and gamma-activity measurements, the extraction constant corresponding to the equilibrium Pb2+(aq)+SrL22+(nb) reversible a rrow PbL22+(nb)+Sr2+(aq) taking place in the two-phase water-nitrobenzene s ystem (L = 15-crown-5; aq = aqueous phase, nb = nitrobenzene phase) was eva luated: log K-ex (Pb2+,SrL22+)=3.0. Further, the stability constant of the PbL22+ complex in nitrobenzene saturated with water was calculated: log bet a(nb) (PbL22+)= 17.8.