EXTRACTIVE SPECTROPHOTOMETRIC DETERMINATION OF VANADIUM USING ROXY-2-(4-METHOXYPHENYL)-6-METHYL-4H-CHROMEN-4-ONE

Authors
AGNIHOTRI N DASS R MEHTA JR
Citation
N. Agnihotri et al., EXTRACTIVE SPECTROPHOTOMETRIC DETERMINATION OF VANADIUM USING ROXY-2-(4-METHOXYPHENYL)-6-METHYL-4H-CHROMEN-4-ONE, Chemia Analityczna, 42(3), 1997, pp. 397-401
Citations number
12
Categorie Soggetti
Chemistry Analytical
Journal title
Chemia Analityczna → ACNP
ISSN journal
00092223
Volume
42
Issue
3
Year of publication
1997
Pages
397 - 401
Database
ISI
SICI code
0009-2223(1997)42:3<397:ESDOVU>2.0.ZU;2-C
Abstract
roxy-2-(4-methoxyphenyl)-6-methyl-4H-chromen-4-one (HL) forms a yellow 1:3 (V: HL) complex with V(III) ion in aqueous medium at 0.15-0.2 mol l(-1) CH3COOH and 60-70 degrees C. The complex is extracted into chlo roform and shows absorption maximum at 410-415 nm. The molar absorptiv ity is 3.3 x 10(4) l mol(-1) cm(-1) at 410 nm. Beer's law is obeyed ov er the vanadium concentration range of 0-2 mu g ml(-1). The method is simple, rapid and sensitive and has been satisfactorily applied for th e determination of vanadium in synthetic and technical samples.