CPC G01N 27/4167 (2013.01) | 9 Claims |
1. A method for measuring an alkalinity of an aqueous sample, comprising:
introducing the aqueous sample to a voltammetric pH electrode;
holding a potential of the voltammetric pH electrode at a pH end point bias potential, wherein the pH end point bias potential corresponds to a titration pH end point;
applying a voltage step waveform comprising a plurality of potential pulses to the voltammetric pH electrode;
titrating the aqueous sample;
measuring one or a few current outputs resulting from the plurality of potential pulses, wherein the measuring comprises square wave amperometry; and
plotting a series current outputs from the voltage step waveform over a time span of the titrating to obtain a current maximum value.
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