Divalent Phosphate Electrode

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Science  12 Dec 1969:
Vol. 166, Issue 3911, pp. 1403-1404
DOI: 10.1126/science.166.3911.1403


Divalent phosphate ion activities can be measured in dilute aqueous solutions in the physiological pH range (7.0 to 7.5) with a liquid ionexchange membrane electrode system; the organic ion exchanger consists of an amine chloride membrane. Reference solutions may be either aqueous chloride or bicarbonate solutions. An essentially Nernstian slope is obtained.

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