Extractive spectrophotometric determination of vanadium(v) using 3-hydroxy-2-(4-methoxyphenyl)-6-methyl-4H-chromen-4-one

被引：0
|
作者：
Agnihotri, N [1 ]
Dass, R [1 ]
Mehta, JR [1 ]
机构：
[1] Kurukshetra Univ, Dept Chem, Kurukshetra 132119, Haryana, India
来源：
JOURNAL OF THE INDIAN CHEMICAL SOCIETY | 1999年 / 76卷 / 08期
关键词：
D O I：
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中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A simple, sensitive, rapid and selective method for the spectrophotometric determination of vanadium(v) in trace amounts is proposed, using 3-hydroxy-2-(4-methoxyphenyl)-6-methyl-4H-chromen-4-one (HL) as a complexing agent and extracting the coloured 1 :2 (metal : ligand) complex into 1,2-dichloroethane from 0.1 M CN3COOH solution. It obeys Beer's law in the concentration range 0.23-2.45 mu g ml(-1) V-V having molar absorptivity and Sandell's sensitivity of 2.54 x 10(4) dm(3) mol(-1) cm(-1) and 0.00198 mu g cm(-2) at 400 nm. The method has been applied satisfactorily to the analysis of various synthetic and technical samples.
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收藏
页码：421 / 423
页数：3
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