Title:
MICROANALYSIS CHIP
Document Type and Number:
WIPO Patent Application WO/2023/054092
Kind Code:
A1
Abstract:
The problem addressed by the present invention is to provide a microanalysis chip that can stably measure ion concentration and that, without increasing chip size or prolonging measurement time, can suppress the effect, on a working electrode, of ion backflow from a reference electrode region to a working electrode region. In order to solve this problem, the following microanalysis chip is provided. Specifically, in this microanalysis chip: a reference electrode is disposed in a first channel chamber; a sample-soluble ion crystal is disposed on the surface of the reference electrode; a working electrode is disposed in a second channel chamber; and a first channel and a second channel are configured so that, where the time from dispensing of a sample into a dispensing section until the sample reaches the ion crystal is T1 and the time until the sample reaches the working electrode is T2, T1 and T2 have the relationship T1 > T2.
Inventors:
ABE KATSUICHI (JP)
ENOKIDO FUKA (JP)
MIURA JUN (JP)
MAEDA HARUNOBU (JP)
TANAKA MASANORI (JP)
FUKATSU MAKOTO (JP)
MATSUKAWA AKIHISA (JP)
IKAMI YASUKAZU (JP)
MIYAZAKI KEIJI (JP)
YAMAMOTO TAKESHI (JP)
ENOKIDO FUKA (JP)
MIURA JUN (JP)
MAEDA HARUNOBU (JP)
TANAKA MASANORI (JP)
FUKATSU MAKOTO (JP)
MATSUKAWA AKIHISA (JP)
IKAMI YASUKAZU (JP)
MIYAZAKI KEIJI (JP)
YAMAMOTO TAKESHI (JP)
Application Number:
PCT/JP2022/035095
Publication Date:
April 06, 2023
Filing Date:
September 21, 2022
Export Citation:
Assignee:
CANON KK (JP)
International Classes:
G01N27/30; B01J19/00; G01N27/28; G01N27/416
Foreign References:
| JP2014006086A | 2014-01-16 | |||
| US20160033438A1 | 2016-02-04 | |||
| US20140183059A1 | 2014-07-03 | |||
| JP2011039070A | 2011-02-24 | |||
| JPH0450530B2 | 1992-08-14 |
Other References:
RUECHA NIPAPAN, CHAILAPAKUL ORAWON, SUZUKI KOJI, CITTERIO DANIEL: "Fully Inkjet-Printed Paper-Based Potentiometric Ion-Sensing Devices", ANALYTICAL CHEMISTRY, AMERICAN CHEMICAL SOCIETY, US, vol. 89, no. 19, 3 October 2017 (2017-10-03), US , pages 10608 - 10616, XP093053067, ISSN: 0003-2700, DOI: 10.1021/acs.analchem.7b03177
Attorney, Agent or Firm:
OKABE Yuzuru et al. (JP)
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