Solvent extraction of lead using a nitrobenzene solution of strontium dicarbollylcobaltate in the presence of polyethylene glycol PEG 400

被引：13

作者：

Makrlík, E

Vanura, P

机构：

[1] Univ W Bohemia, Fac Sci Appl, Plzen 30614, Czech Republic

[2] Prague Inst Chem Technol, CR-16628 Prague 6, Czech Republic

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2005年 / 267卷 / 01期

关键词：

D O I：

10.1007/s10967-006-0032-x

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

From extraction experiments and gamma-activity measurements, the extraction constant corresponding to the equilibrium Pb2+ (aq)+SrL2+ (nb)double left right arrow PbL2+ (nb)+Sr2+ (aq) taking place in the two-phase water-nitrobenzene system (L = PEG 400; aq = aqueous phase, nb = nitrobenzene phase) was evaluated as logK(ex)(Pb2+, SrL2+) = 2.0 +/- 0.1. Further, the stability constant of the PEG 400-lead complex in nitrobenzene saturated with water was calculated for a temperature of 25 degrees C:log beta(nb)(PbL2+) = 12.9 +/- 0.1.

引用

页码：233 / 235

页数：3

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