Liquid—liquid extraction of alkaline earth metal ions with a non-ionic surfactant having a poly(oxyethylene) chain (Triton X-100)
✍ Scribed by Yoichi Kikuchi; Toshio Suzuki; Kiyoshi Sawada
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 474 KB
- Volume
- 264
- Category
- Article
- ISSN
- 0003-2670
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✦ Synopsis
The Ion-pair extractlon of poly(oxyethylene) alkylphenyl ether (Tnton X-100, S) complexes of alkahne earth metal Ions CM'+) wth plcrate Ion (Ps-) mto 1,Zdlchloroethane (1,ZDCE) was studled The extractlon eqmhbrla are interpreted by the extractlon of the ion pair, [SM'+ (Plc-I,], and the dtssoclatlon of the ton pair mto [SMZf (Plc-)] and PIG-m 1,2-DCE Thermodynarmc constants of the extraction and the dissociation of the ion pairs were evaluated The extractlon constant increases m the order Ca"< Sr*+ < Ba*+ Thus order IS explained by the magmtudes of the formatlon constants of the alkahne earth metal Ion complexes with Trlton X-100 m the aqueous phase The dlssoclatlon constant of the Ion pair m 1,2-DCE IS almost constant for the alkaline earth metal ions