Cloud point extraction equilibrium of lanthanum(III), europium(III) and lutetium(III) using di(2-ethylhexyl)phosphoric acid and Triton X-100.
Cloud point extraction equilibrium of lanthanum(III), europium(III) and lutetium(III) using di(2-ethylhexyl)phosphoric acid and Triton X-100.
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DOI：
10.1016/j.talanta.2007.05.012
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发表时间：
2007-10
期刊：
影响因子：
6.1
通讯作者：
A. Ohashi;T. Hashimoto;H. Imura;K. Ohashi
中科院分区：
文献类型：
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作者：
A. Ohashi;T. Hashimoto;H. Imura;K. Ohashi
研究了Triton X-100对镧系元素（Ln（III）= La（III），Eu（III），Lu（III））的浊点萃取行为。有人建议，萃取的Ln（III）到表面活性剂丰富的相没有添加螯合剂是由Triton X-100中所含的杂质。使用3.0 × 10 − 5moldm − 3HDEHP和2.0%（v/v）Triton X-100，所有Ln（III）金属的萃取率均超过91%。平衡分析表明，Ln（III）以Ln（DEHP）3的形式被萃取到富表面活性剂相中。实验还得到了HDEHP和2.0%（v/v）TritonX-100对Ln（III）的萃取常数。
The cloud point extraction behaviors of lanthanoids(III) (Ln(III)=La(III), Eu(III) and Lu(III)) with and without di(2-ethylhexyl)phosphoric acid (HDEHP) using Triton X-100 were investigated. It was suggested that the extraction of Ln(III) into the surfactant-rich phase without added chelating agent was caused by the impurities contained in Triton X-100. The extraction percentage more than 91% for all Ln(III) metals was obtained using 3.0×10−5moldm−3HDEHP and 2.0% (v/v) Triton X-100. From the equilibrium analysis, it was clarified that Ln(III) was extracted as Ln(DEHP)3into the surfactant-rich phase. The extraction constant of Ln(III) with HDEHP and 2.0% (v/v) Triton X-100 were also obtained.