SOLVENT EXTRACTION OF EUROPIUM(III) WITH CROWN ETHERS AND PICRATE IONS
作者:
Yuko HASEGAWA,
Sakiko HARUNA,
期刊:
Solvent Extraction and Ion Exchange
(Taylor Available online 1984)
卷期:
Volume 2,
issue 3
页码: 451-458
ISSN:0736-6299
年代: 1984
DOI:10.1080/07366298408918458
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
The extraction of europium(III) with 15-crown-5 (15C5), benzol-crown-6 (B15C5), 18-crown-6 (18C6) or dibenzo-18-crown-6(DB18C6) and picrate anion into chloroform was measured at 25°C. It was found that the stoichlometry in the species extracted is 1:2:3 with respect to europium(III), each crown ether employed and picrate ion. The extraction constants defined as Kex=([EUE2A3])o/[Eu3+]a)x[E]a-2[A-a-3were measured to be 108.2, 1011.1, 1013.3, and 1013.3for 15C5, B15C5, 18C6, and DB18C6, successively.
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