Biomedical subjects

Marek Kosmulski

Publications and source records attributed to Marek Kosmulski.

20 records · Page 2Linked to original sources

PubMed2002

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 at least partially due to application of different instruments. Different zetameters produce different zeta potentials of silica in the acidic range and different IEP.

Journal Article↗

PubMed2001

Pristine Points of Zero Charge of Gallium and Indium Oxides.

Electrokinetic measurements and potentiometric titrations of indium oxide (commercially available reagent grade powder, washed with NaOH and HNO(3) to remove strongly adsorbed species) indicate the pristine point of zero charge to be pH 8.7. The isoelectric point at pH 9 was obtained for gallium oxide prepared in the same way. These values match the pristine point of zero charge of alumina, but they are much higher than the values reported for indium oxide and gallium oxide in the literature. Copyright 2001 Academic Press.

Journal Article↗