Extraction of copper ions using silica gel with chemically modified surface |
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Authors: | Iwona Rykowska Wiesław Wasiak Joanna Byra |
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Affiliation: | (1) Faculty of Chemistry, Adam Mickiewicz University, ul. Grunwaldzka 6, 607 80 Poznań, Poland |
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Abstract: | The applicability of silica gels for the application in solid-phase extraction was tested. Silica was modified with ketoimine groups. Surface characteristics of the modified silica were determined by elemental analysis, NMR spectra of solid phases (29Si CP MAS NMR), analysis of pore size distribution of the silica support, and nitrogen adsorption-desorption. Newly proposed sorbents with ketoimine groups were applied in the preconcentration of trace amounts of the Cu (II) ions from lake water, post-industrial water, and demineralized water unburdened back to the lake. Presented at the 34th International Conference of the Slovak Society of Chemical Engineering, Tatranské Matliare, 21–25 May 2007. |
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Keywords: | silica gel cooper ions solid-phase extraction ketoimine groups |
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