Determination of trace impurities in some nickel compounds by flame atomic absorption spectrometry after solid phase extraction using Amberlite XAD-16 resin |
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Authors: | L El?i M Soylak A Uzun E Büyükpatr and M Doan |
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Institution: | (1) Erciyes University, Faculty of Art and Science, Department of Chemistry, 38039 Kayseri, Turkey e-mail: elci@erciyes.edu.tr, TR;(2) Hacettepe University, Faculty of Science, Department of Chemistry, 06532, Ankara, Turkey, TR |
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Abstract: | A simple flame atomic absorption spectrometric (FAAS) procedure for the determination of lead, bismuth, gold, palladium and
cadmium as impurities in Raney nickel and nickel oxide was developed using a preconcentration step on an Amberlite XAD-16
resin packed column. Lead, bismuth, gold, palladium and cadmium were quantitatively recovered and separated from a solution
containing 1 M HCl and 0.3 M NaI by the column system. Effects of the various parameters such as reagent concentrations, sample
volume, matrix effects, etc. have been investigated. Under optimized conditions, the relative standard deviation of the combined
method of sample treatment, preconcentration and determination with FAAS (n = 7) is generally lower than 12%. The limit of detection (3s, n = 20) was between 10–270 ng/g. The results were used for separation and preconcentration of five trace elements from nickel
matrices.
Received: 8 February 2000 / Revised: 31 March 2000 / Accepted: 7 April 2000 |
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