Spectrophotometric determination of vanadium(V) with 5,7-dichlorooxine andrhodamine 6G

Authors
Varma, RL Reddy, MLP Rao, TP
Citation
Rl. Varma et al., Spectrophotometric determination of vanadium(V) with 5,7-dichlorooxine andrhodamine 6G, CHEM ANAL, 45(5), 2000, pp. 745-750
Citations number
8
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
CHEMIA ANALITYCZNA
ISSN journal
00092223 → ACNP
Volume
45
Issue
5
Year of publication
2000
Pages
745 - 750
Database
ISI
SICI code
0009-2223(2000)45:5<745:SDOVW5>2.0.ZU;2-1
Abstract
A selective method is described for the determination of 0.5-15 mug of vana dium(V) present in 50 ml based on the extraction of ternary ion-association complex formed by reacting vanadium(V) with 5,7-dichlorooxine and Rhodamin e 6G. The method is highly sensitive (epsilon = 6.12 x 10(4) 1 mol(-1) cm(- 1) at 516 nm). Very few ions interfere in the above determination which can he overcome by the addition of fluoride, citrate and thiourea. The develop ed method is precise and reliable. This was proved determining V(V) in cert ified reference material.