Extractive spectrophotometric determination of cobalt with 5,7-dichloroquinolin-8-ol and rhodamine 6G

Authors
Augustine, M Rao, TP
Citation
M. Augustine et Tp. Rao, Extractive spectrophotometric determination of cobalt with 5,7-dichloroquinolin-8-ol and rhodamine 6G, I J CHEM A, 38(1), 1999, pp. 93-94
Citations number
9
Categorie Soggetti
Chemistry
Journal title
INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY
ISSN journal
03764710 → ACNP
Volume
38
Issue
1
Year of publication
1999
Pages
93 - 94
Database
ISI
SICI code
0376-4710(199901)38:1<93:ESDOCW>2.0.ZU;2-E
Abstract
A simple and sensitive method far extractive spectrophotometric determinati on of trace amounts of cobalt has been described. The method is based on th e extraction of ternary ion-association complex viz.,cobalt-5,7,-dichroroqu inolin-8-ol-rhodamine 6G into toluene. The colour reaction is sensitive (ep silon = 4.42 x 10(5) 1 mol(-1) cm(-1)) and is employed for the determinatio n of 0.7 to 7.0 mu g of cobalt in 100 ml of aqueous phase. The method is pr ecise and has been applied for the determination of trace amounts of cobalt in high purity ammonium sulphate samples.