SPECTROPHOTOMETRIC DETERMINATION OF GADOLINIUM(III) WITH 2-(5-BROMO-2-PYRIDYLAZO)-5-DIETHYLAMINOPHENOL (5-BR-PADAP)

被引：37

作者：

MARTINEZ, LD

PERINO, E

MARCHEVSKY, EJ

OLSINA, RA

机构：

[1] Department of Analytical Chemistry, Faculty of Chemistry, Biochemistry and Pharmacy, 5700 San Luis

来源：

TALANTA | 1993年 / 40卷 / 03期

关键词：

D O I：

10.1016/0039-9140(93)80249-Q

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Reaction between gadolinium(III) and 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol (5-Br-PADAP) was studied for delineating optimal conditions for complexation. This reagent can be used for the spectrophotometric determination of Gd(III) in concentrations ranging from 0.04 to 1.2 ppm (a = 1.76(+/-0.03) x 10(5) (l.-1 mole-1 . cm). The reaction takes place at a pH between 9.2 and 11.6. In the presence of Triton X-100 this complex is soluble in water. In order to overcome difficulties caused by the presence of other lanthanides, an ion exchange chromatographic technique was used.

引用

页码：385 / 390

页数：6

共 15 条

[1] 2-(5-BROMO-2-PYRIDYLAZO)-5-DIETHYLAMINOPHENOL AS A REAGENT FOR THE SPECTROPHOTOMETRIC DETERMINATION OF LA(III), Y(III), AND CE(III) [J].