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Abstract

In an electrochemical imaging method of, by applying voltages between working electrodes arranged in a measurement area and a counter electrode and causing the working electrodes to perform a redox reaction by giving and reception of electrons to and from a plurality of measurement target substances generated or consumed by a sample in an electrolytic solution to measure currents that flow through the individual electrodes, imaging images of density distributions of the measurement target substances based on distributions of the currents in the measurement area, the working electrodes are arranged in the measurement area in a manner of being arranged uniformly in each of a plurality of working electrode groups, each of the working electrode groups comprising a plurality of working electrodes, and in a manner of being mutually mixed; applied voltages specified for the working electrode groups, respectively, are simultaneously applied between the working electrodes and the counter electrode; any two working electrode groups among the plurality of working electrode groups are mutually different in at least any of the determined voltage, presence/absence of a molecular modification of an electrode surface and a species of the molecular modification; and based on the individual distributions of the currents in the measurement area in the working electrode groups, the images of density distributions of the measurement target substances are acquired by simultaneous measurements.

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