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

Authors
DASS R MEHTA JR
Citation
R. Dass et Jr. Mehta, EXTRACTIVE SPECTROPHOTOMETRIC DETERMINATION OF NIOBIUM(V) USING ROXY-2-(4-METHOXYPHENYL)-6-METHYL-4H-CHROMEN-4-ONE, Annali di chimica, 87(9-10), 1997, pp. 653-656
Citations number
18
Journal title
Annali di chimica → ACNP
ISSN journal
00034592
Volume
87
Issue
9-10
Year of publication
1997
Pages
653 - 656
Database
ISI
SICI code
0003-4592(1997)87:9-10<653:ESDONU>2.0.ZU;2-B
Abstract
Various hydroxyflavones have been used for the gravimetric determinati on(1-3) of niobium(V); among these, quercetin(4) in presence of H2O2 a nd 3-hydroxy-flavone(5) find use in the spectrophotometric determinati on of niobium. Accordingly, it has been considered worthwhile to study the complex formation reactions of niobium with other hydroxyflavones such as oxy-2-(4-methoxyphenyl)-6-methyl-4H-chromen-4-one, with a vie w to develop a better extractive spectrophotometric method for trace d etermination of the element.