DETERMINATION OF TRACES OF VANADIUM WITH 5-BROMOSALICYLHYDROXAMIC ACID BY SOLID-PHASE SPECTROPHOTOMETRY

被引：26

作者：

PASCUALREGUERA, MI ^{[1
]}

MOLINADIAZ, A ^{[1
]}

RAMOSMARTOS, N ^{[1
]}

CAPITANVALLVEY, LF ^{[1
]}

机构：

[1] UNIV GRANADA,FAC SCI,DEPT ANALYT CHEM,E-18071 GRANADA,SPAIN

来源：

ANALYTICAL LETTERS | 1991年 / 24卷 / 12期

关键词：

SOLID-PHASE SPECTROPHOTOMETRY; 5-BROMOSALICYLHYDROXAMIC ACID; VANADIUM DETERMINATION; PETROLEUM CRUDES; NATURAL WATERS;

D O I：

10.1080/00032719108053049

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A microdetermination method at mu-g.l-1 levels for vanadium by solid-phase spectrophotometry has been developed. 5-Bromosalicylhydroxamic acid was used as chromogenic reagent to form a 1:2 violet complex which is easily sorbed and concentrated on a dextran-type anion-exchange resin. The resin-phase absorbances at 560 and 850 nm were measured directly. Vanadium can be determined in the 5 - 60-mu-g.l-1 range with a RSD of 4.3%. The method is applied to the determination of vanadium in petroleum crudes and natural water samples.

引用

页码：2245 / 2261

页数：17

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