APPLICATION OF EUROPIUM(III) EXTRACTION WITH ORGANOPHOSPHINIC ACID TO LIQUID MEMBRANE-TRANSPORT

被引：10

作者：

NAKAMURA, S

SATO, A

AKIBA, K

机构：

[1] Institute for Advanced Materials Processing, Tohoku University, Sendai, 980, Katahira-2, Aoba-ku

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES | 1994年 / 178卷 / 01期

关键词：

D O I：

10.1007/BF02068657

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The extraction behavior of Eu(III) has been studied using di(2,4,4-trimethylpentyl)phosphinic acid (DTMPPA, HA) in kerosene. Europium was extracted as Eu(HA2)3 with the extraction constant of 2.0 . 10(-3). This extraction system was applied to the transport of Eu(III) across a DTMPPA liquid membrane supported on porous polytetrafluoroethylene. Europium was quantitatively moved through the liquid membrane containing 0.1 M (HA)2 as a mobile carrier from the feed solution of pH above 3 into the product solution of 0.1 M HNO3, yielding a concentration factor of ten. The transport rate increased with increasing pH and DTMPPA concentration.

引用

页码：63 / 71

页数：9

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