Electrochemical measurement apparatus

An electrochemical measurement apparatus comprising:

• an electrode group including a working electrode capable of electrochemically reacting with a specific substance in an environment, said electrode group being adapted to detect said specific substance in an environment based on the electrochemical reaction by said working electrode;
• a correction-equation storage part for storing a nonlinearity correction equation which represents a characteristic about a relationship between a detected value of said specific substance in an environment based on the detection by said electrode group and a normal value of said specific substance in an environment, and which is used for calculating said normal value based on said detected value, an eigenvalue of an element forming said characteristic, and a conversion coefficient value for converting said detected value to said normal value;
• and
• a nonlinearity-correction calculation part operable to assign said detected value of said specific substance in an environment based on the detection by said electrode group to said nonlinearity correction equation stored in said correction-equation storage part so as to calculate said normal value.