Micro titration device and its application to rice freshness measurement

X. L. Qiu, Fumihiro Sassa, D. Itoh, T. Satake, H. Suzuki

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

1 被引用数 (Scopus)

抄録

A plug-based on-chip titration device, constructed with a glass substrate and a poly (dimethylsiloxane) (PDMS) substrate, was used for acid-base titration. The device features a volume-regulation unit to produce plugs of a uniform volume used for titration. Although the volume of plugs formed by only injecting a solution and air simultaneously from a T-junction distributed in a wide range, the plug volume became markedly uniform using the volume-regulation unit. Acid-base titration could be conducted using this device. Furthermore, freshness of rice was evaluated by titrating fatty acid in a rice grain with a KOH solution using phenolphthalein as a pH-indicator. Rice samples harvested in different years and from different areas as well as of different species were analyzed using this device. Difference was observed clearly in the titration curves. New rice showed a color change at an early stage, whereas the color change delayed with aged rice.

本文言語英語
ホスト出版物のタイトル2011 16th International Solid-State Sensors, Actuators and Microsystems Conference, TRANSDUCERS'11
ページ2291-2294
ページ数4
DOI
出版ステータス出版済み - 2011
外部発表はい
イベント2011 16th International Solid-State Sensors, Actuators and Microsystems Conference, TRANSDUCERS'11 - Beijing, 中国
継続期間: 6 5 20116 9 2011

その他

その他2011 16th International Solid-State Sensors, Actuators and Microsystems Conference, TRANSDUCERS'11
国/地域中国
CityBeijing
Period6/5/116/9/11

All Science Journal Classification (ASJC) codes

  • ハードウェアとアーキテクチャ
  • 電子工学および電気工学

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