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.
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页码：2245 / 2261
页数：17
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