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Guidelines for Potentiometric Measurements in
Suspensions - Practical pH Measurements in Soil
The measured cell potentials for suspension potentiometric
cells have been interpreted and explained by a detailed analysis of
the schemes for these cells (Part A). Some former disagreements amongst
investigations have been clarified. A new unambiguous operational definition
of the Suspension Effect is presented. It is defined as the difference
in cell potential for two suspension potentiometric cells, one with
both electrodes in the separated equilibrium solution and the other
with both electrodes in the sediment or suspension. This potential difference
is the sum of the change in the indicator electrode potential and the
change in the liquid junction potential of the reference electrode,
when the electrodes are used for measurement, once in the sediment of
the suspension and then in its equilibrium solution.
> Download full text of the Provisional Recommendations (pdf
file - 795KB) [refresh pdf 8 June
Comments by 30 September 2006
Prof. Srecko F. Oman
University of Ljubljana
Department of Physical Chemistry
P.O. Box 537
TEL: + 1 241 91 00
FAX: + 1 241 94 37
E-MAIL: [email protected]
> Project Description
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