Column chromatographic preconcentration and separation of cobalt in a vitamin, an alloy and an ore using chelating resin containing acenaphthenequinone monoxime supported over naphthalene
- 1 January 1995
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in The Analyst
- Vol. 120 (8) , 2203-2205
- https://doi.org/10.1039/an9952002203
Abstract
A sensitive, economical and rapid method of preconcentration and separation of cobalt has been developed by using a solid chelating resin, acenaphthenequinone monoxime (AQM), supported on naphthalene. Cobalt forms a reddish-yellow complex with AQM supported on naphthalene in a column at pH 8–10 with a flow rate of 1 ml min–1. The metal complex and naphthalene are dissolved out from the column with 10 ml of trichloromethane and the absorbance is measured at 340 nm against a reagent blank. Beer's law is obeyed up to 5.89 mg l–1. The molar absorptivity coefficient is 1.36 × 104 m2 mol–1.Keywords
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