A Heterogeneous Precipitate Based Potassium Membrane Ion Selective Electrode-Its Preparation and Analytical Application
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Date
2011
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Abstract
A new potassium ion-selective membrane electrode has been
developed based on heterogeneous precipitate and the membrane was
development using epoxy resin. An anaK tically useful potential changes
occur in the 1 tolO'^M concentration range of KCl. The slope of the
linear portion (1 \ 1 o '- 1 x 10’^ M) was 55mv decade. The stable
potentiometric signals are obtained with in a short period of 7 seconds.
In the presence of lxl0"^M potassium no interference was observed for
Na*, Mg’*, Ba"'', Mn’*, .Ni'*, Cu’*, F , CT, Br-. r,S0 4*' ions. The effect
of pH and effect of medium have been standardized found to give better
response life time of the electrode was approximately 3 months. This
electrode has been used for the determination of potassium ion
commercially available product.