Multiinstrument Study of the Electrophoretic Mobility of Fumed Silica
Although silica is one of the most common adsorbents, the position of its isoelectric point (IEP) on the pH scale remains an open question. Different values from 1 to 4 have been published, and there is even a controversy about the very existence of the IEP. The discrepancies in the literature are a...
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Veröffentlicht in: | Analytical chemistry (Washington) 2002-01, Vol.74 (1), p.253-256 |
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creator | Kosmulski, Marek Hartikainen, Juha Ma̧czka, Edward Janusz, Władysław Rosenholm, Jarl B |
description | Although silica is one of the most common adsorbents, the position of its isoelectric point (IEP) on the pH scale remains an open question. Different values from 1 to 4 have been published, and there is even a controversy about the very existence of the IEP. The discrepancies in the literature are at least partially due to application of different instruments. Different zetameters produce different ζ potentials of silica in the acidic range and different IEP. |
doi_str_mv | 10.1021/ac015584h |
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subjects | Chemistry Colloidal state and disperse state Exact sciences and technology General and physical chemistry Physical and chemical studies. Granulometry. Electrokinetic phenomena Silica |
title | Multiinstrument Study of the Electrophoretic Mobility of Fumed Silica |
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