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Reported values for the acid dissociation constant (pKa) of the saturated fatty acids show a wide range, depending on their method of measurement. Although the pKa values of the shorter chain saturated fatty acids are generally recognised to be approximately 4.5–5.0, pKa values for the longer chain fatty acids have been reported to be much higher, up to pH 10. It is the purpose of this study to investigate...
The aim of this paper was to investigate how the use of zeta potential measurements on the hematite–oleate system as a function of pH could provide additional information on this system. From the literature survey it was found that the presence of oleate causes a reduction in both the zeta potential and isoelectric point of hematite compared to their values in the absence of oleate. There have been...
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