Extractive spectrophotometric determination of vanadium(v) using 3-hydroxy-2-(4-methoxyphenyl)-6-methyl-4H-chromen-4-one | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

4697907

Reference Type

Journal Article

Title

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

Author(s)

Agnihotri, N; Dass, R; Mehta, JR

Year

1999

Is Peer Reviewed?

Yes

Journal

Journal of the Indian Chemical Society
ISSN: 0019-4522

Volume

Issue

Page Numbers

421-423

Web of Science Id

WOS:000082213900017

Abstract

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.