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Solvent extraction of lead using a nitrobenzene solution of strontium dicarbollylcobaltate in the presence of polyethylene glycol PEG 400
被引：0
作者：
E. Makrlík
P. Vaňura
机构：
[1] Faculty of Applied Sciences,
[2] University of West Bohemia,undefined
[3] Prague Institute of Chemical Technology,undefined
来源：
Journal of Radioanalytical and Nuclear Chemistry
|
2005年
/
267卷
关键词：
Polyethylene;
Glycol;
Aqueous Phase;
Strontium;
Solvent Extraction;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
From extraction experiments and γ-activity measurements, the extraction constant corresponding to the equilibrium Pb2+(aq)+SrL2+ (nb)↔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 logKex(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 °C: log βnb(PbL2+)=12.9±0.1.
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页码：233 / 235
页数：2
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