SPECTROPHOTOMETRIC DETERMINATION OF VANADIUM(V) BY ADSORPTION OF ITS N-P-BROMOPHENYL THIOBENZOHYDROXAMIC ACID COMPLEX ON MICRO CRYSTALLINE NAPHTHALENE

Authors
KUMAR A MATHUR N MATHUR P MATHUR SP
Citation
A. Kumar et al., SPECTROPHOTOMETRIC DETERMINATION OF VANADIUM(V) BY ADSORPTION OF ITS N-P-BROMOPHENYL THIOBENZOHYDROXAMIC ACID COMPLEX ON MICRO CRYSTALLINE NAPHTHALENE, Revue Roumaine de Chimie, 43(1), 1998, pp. 3-5
Citations number
6
Categorie Soggetti
Chemistry
Journal title
Revue Roumaine de Chimie → ACNP
ISSN journal
00353930
Volume
43
Issue
1
Year of publication
1998
Pages
3 - 5
Database
ISI
SICI code
0035-3930(1998)43:1<3:SDOVBA>2.0.ZU;2-B
Abstract
The spectrophotometric determination of vanadium(V) with N-p-bromophen yl thiobenzohydroxamic acid (BPTBHA) is described. A very stable water insoluble complex of vanadium(V) formed with BPTBHA has been adsorbed on micro crystalline naphthalene from the aqueous solution. The napht halene mixture is dissolved in DMF and vanadium(V) has been estimated by absorbance, measurements at 405 nn. Its absorption obeys Beer's law over the range of 7-150 mu g of vanadium(V) in 10 mL of DMF. The mola r absorptivity is found to be 2.6 x 10(4) L.mol(-1) cm(-1), the sensit ivity of vanadium(V) being 0.013 mu g cm(-2) for the absorbance of 0.0 01.