National Institute of Advanced Industrial Science and Technology

Arkray, Inc.

Yoshihide Tanaka

Satoshi Yonehara

Yusuke Nakayama

Koji Sugiyama

Shinichi Wakida

Yusuke c/o Arkray Inc Nakayama

Satoshi c/o Arkray Inc Yonehara

An electrophoresis chip that can be small and simple and that can analyze a sample with high accuracy is provided. The electrophoresis chip includes an upper substratea lower substratean introduction reservoira recovery reservoirand a capillary channel for sample analysisThe introduction reservoirand the recovery reservoirare formed in the lower substrateThe introduction reservoirand the recovery reservoirare in communication with each other via the capillary channel for sample analysisThe introduction reservoirreceives a sample to be measured. The sample is electrophoretically introduced directly into the capillary channel for sample analysisby creating a potential difference between the introduction reservoirand the recovery reservoirand is also analyzed in the capillary channel for sample analysisduring the separation of the sample while the sample is being continuously supplied.

Electrophoresis chip, electrophoresis apparatus, and method for analyzing sample by capillary electrophoresis

A process for analyzing a sample by a capillary electrophoresis method is provided that allows for high analytic precision and reduction in apparatus size, and can be readily carried out by electrophoresing a complex of a sample and an anionic group-containing compound in the capillary channel, wherein the capillary channel includes an A layer that is coated on an inner wall thereof and a B layer that is coated on the A layer, where the A and B layers are as described.

Process for analyzing sample by capillary electrophoresis method

A process for analyzing a sample by a capillary electrophoresis method is provided that allows the apparatus to be reduced in size, allows a high analytical precision to be obtained, and can be carried out easily. The analytical process of the present invention is a process for analyzing a sample by a capillary electrophoresis method. The analytical process includes preparing a capillary tube to be used for the capillary electrophoresis method, and performing electrophoretic separation of a complex of a sample and an anionic group-containing compound that are bonded together, in the capillary tube, wherein the capillary tube includes an anionic layer that is formed of the anionic group-containing compound and that is coated on the inner wall of the capillary tube, and the anionic layer is fixed to the inner wall of the capillary tube by a covalent bond.

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Osaka, Japan

Yoshihide Tanaka