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Trace metal impurities in silica as a cause of strongly interacting silanols |
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| Authors: | J. Nawrocki Debbie L. Moir W. Szczepaniak |
| Affiliation: | (1) Faculty of Chemistry, A. Mickiewicz University, Grunwaldzka 6, PL-60-780 Poznań, Poland;(2) Trace Analysis Research Centre, Dalhousie University, B3H 4J1 Halifax, N. Scotia, Canada |
| Abstract: | Summary The paper describes nuclear activation analysis of several chromatographic grade silicas for the determination of trace metals. The effect of acid washing is described and the effect of trace metals on the acidity of surface silanols is discussed. A correlation has been found between the concentration of metal traces in the layer of silica adjacent to the surface and the concentration of strongly interacting sites. |
| Keywords: | Silica gel Metal traces in silica matrix Strongly interacting silanols |
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