SEPARATION OF SOME TRACE RARE-EARTHS FROM URANIUM BY 2-STEP LIQUID-LIQUID-EXTRACTION AND ESTIMATION BY ICP-AES

被引：10

作者：

BISWAS, SS ^{[1
]}

MURTY, PS ^{[1
]}

SETHUMADHAVAN, A ^{[1
]}

KAIMAL, R ^{[1
]}

SANKARAN, AV ^{[1
]}

机构：

[1] BHABHA ATOM RES CTR,DIV SPECT,BOMBAY 400085,INDIA

来源：

ANALYTICAL LETTERS | 1991年 / 24卷 / 05期

关键词：

RARE EARTHS; URANIUM; INDUCTIVELY COUPLED PLASMA ATOMIC EMISSION SPECTROMETRY; LIQUID-LIQUID EXTRACTION;

D O I：

10.1080/00032719108052951

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Trace amounts of rare earths, Ce, Sm, Eu, Gd, Dy, Er, Yb, and Y separated from nuclear grade uranium were determined by inductively coupled plasma atomic emission spectrometry (ICP-AES). The separation of the trace rare earths was done by a two-step liquid-liquid extraction procedure. The first step involved the separation of the rare earths by complexing with tributylphosphate in CC1(4) medium. The second step employed tri-n-octylphosphine oxide which removed the final traces of uranium from the aqueous phase. The two-step procedure yielded recoveries for the trace rare earths in the range 90-103 %. The detection limits obtained by the ICP-AES method for the rare earths in aqueous solution ranged between 0.1 and 9.5 ng/ml.

引用

页码：887 / 901

页数：15

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