EXTRACTION AND SENSITIVE SPECTROPHOTOMETRIC DETERMINATION OF YTTERBIUM WITH 2-(3,5-DICHLORO-2-PYRIDYLAZO)-5-DIMETHYLAMINOPHENOL

被引：6

作者：

FERNANDEZ, L

OLSINA, R

机构：

[1] Department of Analytical Chemistry (Dr Carlos B. Marone) Faculty of Chemistry, Biochemistry and Pharmacy, University of San Luis

来源：

TALANTA | 1992年 / 39卷 / 12期

关键词：

D O I：

10.1016/0039-9140(92)80191-F

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The operating conditions for the absorptiometric determination of Yb(III) with the reagent 2-(3,5-dichloro-2-pyridylazo)-5-dimethylaminophenol (3,5-diClDMPAP) by a liquid-liquid extraction technique are presented. The complex yields a molar absorptivity of 1.54 x 10(5) l.mole-1.cm-1 (lambda(max) = 588 nm) and an optimum concentration range of 0.025-1.360 mg/l., at pH = 10. The method developed has been applied to the determination of Yb(III) in synthetic and concrete mixtures.

引用

页码：1605 / 1609

页数：5

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