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KMID : 1059520080520020155
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Journal of the Korean Chemical Society
2008 Volume.52 No. 2 p.155 ~ p.163
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Preconcentration of Copper(II) Using Mesoporous Organo-Silicas and Determination by Flame Atomic Absorption Spectrometry
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Ali Moghimi
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Abstract
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A simple and reproducible method for the rapid extraction and determination of trace amounts of copper( II) ions using mesoporous organo-silicas mesoporous silica and atomic absorption spectrometry is presented. Common coexisting ions did not interfere with the separation and determination. The preconcentration factor was 100 (1 ml elution volume) for a 100 ml sample volume. The limit of detection of the proposed method is 1.0 ng ml-1. The maximum sorption capacity of sorbent under optimum conditions has been found to be 5mg of copper per gram of sorbent. The relative standard deviation under optimum conditions was 2.8% (n=10). Accuracy and application of the method was estimated by using test samples of natural and synthetic water spiked with different amounts of copper(II) ion.
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KEYWORD
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Preconcentration, Copper, Mesoporous Organo-Silica, Solid Phase Extraction, Flame Atomic Absorption Spectrometry (FAAS)
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