| CPC G01N 33/48735 (2013.01) [G01N 27/3271 (2013.01); G01N 27/4161 (2013.01); G01N 33/5005 (2013.01); G06T 7/0012 (2013.01); G06T 7/90 (2017.01); G06T 2207/10016 (2013.01)] | 6 Claims |
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1. An electrochemical measurement apparatus comprising:
an electrolytic solution tank capable of containing an electrolytic solution and a sample that generates or consumes a plurality of measurement target substances in the electrolytic solution;
an array of working electrodes arranged in a measurement area provided on a bottom surface of the electrolytic solution tank, wherein the array of working electrodes comprises an array of current measurement working electrodes and an array of potential measurement working electrodes, the array of current measurement working electrodes and the array of potential measurement working electrodes, respectively, being arranged uniformly in the measurement area, such that the array of current measurement working electrodes spread in the measurement area and the array of potential measurement working electrodes spread in the measurement area are mixed in the measurement area;
a counter electrode and a reference electrode both provided in the electrolytic solution tank;
the apparatus adapted to apply a potential between each current measurement working electrode in the array of current measurement working electrodes and the counter electrode, all simultaneously;
the apparatus adapted to measure a current that flows between each current measurement working electrode in the array of current measurement working electrodes and the counter electrode; and
the apparatus adapted to measure a potential between each potential measurement working electrode in the array of potential measurement working electrodes and the reference electrode;
whereby a distribution in the measurement area of the measured currents and a distribution in the measurement area of the measured potentials are acquired, wherein
the array of current measurement working electrodes comprises a plurality of current measurement working electrode groups each including a plurality of current measurement working electrodes, the plurality of current measurement working electrodes included by each one of the plurality of current measurement working electrode groups, respectively, being arranged uniformly in the measurement area, such that the plurality of current measurement working electrodes included by any one of the plurality of current measurement working electrode groups, spread in the measurement area, and the plurality of current measurement working electrodes included by another one of the plurality of current measurement working electrode groups, spread in the measurement area, are mixed in the measurement area;
the apparatus adapted to apply the potential which is determined such that the potential applied to each of the plurality of current measurement working electrodes included by each group of the plurality of current measurement working electrode groups is the same;
any two current measurement working electrode groups among the plurality of current measurement working electrode groups are mutually different in at least any of the determined potential, the presence/absence of a molecular modification of an electrode surface, and a species of the molecular modification; and whereby
the distribution in the measurement area of the measured currents that flow through the plurality of current measurement working electrodes included by each one of the plurality of current measurement working electrode groups is acquired,
wherein each of the plurality of current measurement working electrodes included by each group of the plurality of current measurement working electrode groups has a same electrode area, and at least two of the current measurement working electrode groups have mutually different electrode areas.
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