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Ion transfer of barium and strontium across the liquid-liquid interface facilitated by polyethylene glycol 400

✍ Scribed by Zhisheng Sun; Erkang Wang

Publisher: John Wiley and Sons
Year: 1989
Tongue: English
Weight: 468 KB
Volume: 1
Category: Article
ISSN: 1040-0397
DOI: 10.1002/elan.1140010511

No coin nor oath required. For personal study only.

✦ Synopsis

A mechanism of metal ion transfer for Ha' + and Sr" at the liquid-liquid interface, facilitated by polyethylene glycol 400 and based on complexation in aqueous and organic phases, is proposed. The interfacial half-wave potential equations are deduced in terms both of the mechanism proposed and of the equilibria of distribution and dissociation in two phases and are verified experimentally. The effect of the polyoxyethylene structure on the selectivity of the facilitated transfer is discussed, and a useful way o f improving the selectivity by selecting neutral carriers for practical analysis is suggested.

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