MICROANALYSIS CHIP

• Main Authors: ENOKIDO, Fuka, MIYAZAKI, Keiji, FUKATSU, Makoto, MATSUKAWA, Akihisa, IKAMI, Yasukazu, MIURA, Jun, MAEDA, Harunobu, ABE, Katsuichi, TANAKA, Masanori, YAMAMOTO, Takeshi
• Format: Patent
• Language: English; French; German
• Published: 07.08.2024
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PHYSICS; TESTING; THEIR RELEVANT APPARATUS; TRANSPORTING

An object is to provide a microanalysis chip with which influence on a working electrode due to backflow of ions from a reference electrode region to a working electrode region can be suppressed and stable ion concentration measurement can be performed without increasing a chip size or prolonging a measurement time. In order to achieve this object, the following microanalysis chip is provided. That is, provided is a microanalysis chip in which: a first channel chamber has a reference electrode arranged therein, the reference electrode having a surface on which an ion crystal having specimen solubility is arranged; a second channel chamber has a working electrode arranged therein; and a first channel and a second channel are configured so that, when a time period required for a specimen to reach the ion crystal after the specimen is dispensed to a dispensing section is represented by T1 and a time period required for the specimen to reach the working electrode after the specimen is dispensed to the dispensing section is represented by T2, the time period T1 and the time period T2 satisfy a relationship of T1>T2.