PM2.5 Particle Detection in a Microfluidic Device by Using Ionic Current Sensing

Taisuke SHIMADA; Hirotoshi YASAKI; Takao YASUI; Takeshi YANAGIDA; Noritada KAJI; Masaki KANAI; Kazuki NAGASHIMA; Tomoji KAWAI; Yoshinobu BABA

doi:10.2116/analsci.18C018

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PM_2.5 Particle Detection in a Microfluidic Device by Using Ionic Current Sensing

Taisuke SHIMADA, Hirotoshi YASAKI, Takao YASUI, Takeshi YANAGIDA, Noritada KAJI, Masaki KANAI, Kazuki NAGASHIMA, Tomoji KAWAI, Yoshinobu BABA

Author information

Taisuke SHIMADA
Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University
ImPACT Research Center for Advanced Nanobiodevices, Nagoya University
Hirotoshi YASAKI
Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University
ImPACT Research Center for Advanced Nanobiodevices, Nagoya University
Takao YASUI
Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University
ImPACT Research Center for Advanced Nanobiodevices, Nagoya University
Japan Science and Technology Agency (JST), PRESTO
Takeshi YANAGIDA
Laboratory of Integrated Nanostructure Materials Institute of Materials Chemistry and Engineering, Kyushu University
Institute of Scientific and Industrial Research, Osaka University
Noritada KAJI
Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University
Masaki KANAI
Laboratory of Integrated Nanostructure Materials Institute of Materials Chemistry and Engineering, Kyushu University
Kazuki NAGASHIMA
Laboratory of Integrated Nanostructure Materials Institute of Materials Chemistry and Engineering, Kyushu University
Tomoji KAWAI
Institute of Scientific and Industrial Research, Osaka University
Yoshinobu BABA
Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University
ImPACT Research Center for Advanced Nanobiodevices, Nagoya University
Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)

Keywords: PM_2.5, size analysis, ionic current sensing, bridge circuit, micropore

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Supplementary material

2018 Volume 34 Issue 12 Pages 1347-1349

DOI https://doi.org/10.2116/analsci.18C018

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Abstract

We have demonstrated a PM_2.5 analysis method that adds information on the number concentration and size by using microfluidic-based ionic current sensing with a bridge circuit. The bridge circuit allows for suppression of the background current and the detection of small PM_2.5 particles, even if a relatively large micropore is used. This is the first demonstration of the detection of PM_2.5 particles via ionic current sensing; our method enables analyses of both the number concentration and size.

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