SYNERGISTIC EXTRACTION ATOMIC SPECTROPHOTOMETRIC DETERMINATION OF VANADIUM IN FOODS AND PETROLEUM CRUDES WITH 5,5'-METHYLENEDISALICYLOHYDROXAMIC ACID (MEDSHA)

被引：11

作者：

BAGUR, G ^{[1
]}

GAZQUEZ, D ^{[1
]}

SANCHEZ, M ^{[1
]}

MARTIN, AM ^{[1
]}

机构：

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

来源：

ANALYTICAL LETTERS | 1993年 / 26卷 / 01期

关键词：

VANADIUM DETERMINATION; EXTRACTION; ATOMIC ABSORPTION SPECTROMETRY; PETROLEUM CRUDES; FOODS;

D O I：

10.1080/00032719308016800

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A method is described for the flame atomic absorption spectrometry (AAS) determination of vanadium, down to microgram level, in food samples and petroleum crudes. The procedure is based on the synergistic extraction of the V(V)-5,'-methylene-disalicylohydroxamic acid (MEDSHA) complex with a 0.5 M. tributyl phosphate (TBP) solution in isobutyl methyl ketone (IBMK). The method is highly selective and has a detection limit of 0.019 mug.ml-1 (V(org)./V(aq). = 0.2) and of 0.006 mug.ml-1 (V(org)./V(aq). = 0.05), with a relative standard deviation (RSD) not exceeding 1.5% at a level of 2 mug.ml-1 and 3% at a level of 0.4 mug.ml-1.

引用

页码：125 / 140

页数：16

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