|Title:||The Determination Of Cobalt In Water Samples By Cathodic Stripping Voltammetry||Authors:||Golimowski, J
Herrera-Melian, J. A.
Pérez Peña, Jesús
|UNESCO Clasification:||230331 Química del agua||Keywords:||Nickel
Water Analysis, et al
|Issue Date:||1995||Journal:||Chemia Analityczna||Abstract:||An analytical procedure for determination of cobalt using cathodic stripping voltammetry with adsorptive preconcentration of complex species with alpha-benzyldioxime (alpha-BD) on a hanging mercury drop electrode was applied for sea and tap water analysis. The optimized conditions include: pH 9 (0.1 mol l(-1) ammonia buffer), alpha-BD concentration 2.6x10(-5)mol l(-1) and nitrite concentration 0.1 mol l(-1). The catalytic effect of nitrite ions is responsible for high sensitivity of the method. The limit of detection for cobalt in sea water is below 2 ng l(-1) ata deposition time of 30 s. The total cobalt concentration, determined after UV irradiation of the sample at pH 2, is the same as without UV irradiation. The square-wave CSV with background subtraction was succesfully applied for determination of cobalt traces in the non-deaerated sea water from Ati antic near Gran Canaria.||URI:||http://hdl.handle.net/10553/72783||ISSN:||0009-2223||Source:||Chemia Analityczna [ISSN 0009-2223], v. 40 (2), p. 201-206, (1995)|
|Appears in Collections:||Artículos|
Items in accedaCRIS are protected by copyright, with all rights reserved, unless otherwise indicated.