Electrochemical detector and method for producing same

An electrochemical detector for detecting a substance in a liquid by generating a redox cycle, the electrochemical detector comprising:

• a first working electrode having a first electrode surface;
• a second working electrode having a second electrode surface;
• a plurality of insulating spacers;
• a first insulating substrate, the first working electrode being formed on one main surface of the first insulating substrate;
• a third electrode formed on the one main surface of the first insulating substrate;
• and
• a connection member for electrically connecting the second working electrode and the third electrode, wherein
• the first and second electrode surfaces are placed so as to face each other so that an electric field is formed between the first and second electrode surfaces,
• the plurality of spacers are placed along the first and second electrode surfaces so as to separate the first and second electrode surfaces from each other,
• each of the spacers is particulate,
• the electrochemical detector comprises a plurality of detection units which are placed along a direction parallel to the electric field, and
• each of the detection units comprises the first working electrode, the second working electrode, and the plurality of spacers.

An electrochemical detector for detecting a substance in a liquid by generating a redox cycle, the electrochemical detector comprising:

• a first working electrode having a first electrode surface;
• a second working electrode having a second electrode surface;
• a plurality of insulating spacers;
• an insulating intermediate substrate placed between the adjacent two detection units;
• and
• an insulating end substrate being placed on an open side of the detection unit, wherein
• the first and second electrode surfaces are placed so as to face each other so that an electric field is formed between the first and second electrode surfaces,
• the plurality of spacers are placed along the first and second electrode surfaces so as to separate the first and second electrode surfaces from each other,
• each of the spacers is particulate,
• the electrochemical detector comprises a plurality of detection units which are placed along a direction parallel to the electric field,
• each of the detection units comprises the first working electrode, the second working electrode, and the plurality of spacers,
• the first or second working electrode is formed on each of both main surfaces of the insulating intermediate substrate, and
• the first or second working electrode is formed on one main surface of the insulating end substrate.