A Wireless pH Sensor Using Magnetoelasticity for Measurement of Body Fluid Acidity

この論文にアクセスする

この論文をさがす

著者

    • Pang Pengfei PANG Pengfei
    • State Key Laboratory of Chemo/Biosensing and Chemometrics, and College of Chemistry and Chemical Engineering, Hunan University
    • Gao Xianjuan GAO Xianjuan
    • State Key Laboratory of Chemo/Biosensing and Chemometrics, and College of Chemistry and Chemical Engineering, Hunan University
    • Xiao Xilin [他] XIAO Xilin
    • State Key Laboratory of Chemo/Biosensing and Chemometrics, and College of Chemistry and Chemical Engineering, Hunan University
    • YANG Wenyue
    • State Key Laboratory of Chemo/Biosensing and Chemometrics, and College of Chemistry and Chemical Engineering, Hunan University
    • CAI Qingyun
    • State Key Laboratory of Chemo/Biosensing and Chemometrics, and College of Chemistry and Chemical Engineering, Hunan University
    • YAO Shouzhuo
    • State Key Laboratory of Chemo/Biosensing and Chemometrics, and College of Chemistry and Chemical Engineering, Hunan University

抄録

The determination of body fluid acidity using a wireless magnetoelastic pH-sensitive sensor is described. The sensor was fabricated by casting a layer of pH-sensitive polymer on a magnetoelastic ribbon. In response to an externally applied time-varying magnetic field, the magnetoelastic sensor mechanically vibrates at a characteristic frequency that is inversely dependent upon the mass of the pH polymer film, which varies as the film swells and shrinks in response to pH. As the magnetoelastic sensor is magnetostrictive, the mechanical vibrations of the sensor launch magnetic flux that can be detected remotely using a pickup coil. The sensor can be used for direct measurements of body fluid acidity without a pretreatment of the sample by using a filtration membrane. A reversible and linear response was obtained between pH 5.0 and 8.0 with a measurement resolution of pH 0.1 and a slope of 0.2 kHz pH<sup>-1</sup>. Since there are no physical connections between the sensor and the instrument, the sensor can be applied to <i>in vivo</i> and <i>in situ</i> monitoring of the physiological pH and its fluctuations.

収録刊行物

  • Analytical sciences : the international journal of the Japan Society for Analytical Chemistry  

    Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 23(4), 463-467, 2007-04-10 

    The Japan Society for Analytical Chemistry

参考文献:  19件

参考文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

各種コード

  • NII論文ID(NAID)
    10018914405
  • NII書誌ID(NCID)
    AA10500785
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    09106340
  • NDL 記事登録ID
    8698591
  • NDL 雑誌分類
    ZP4(科学技術--化学・化学工業--分析化学)
  • NDL 請求記号
    Z54-F482
  • データ提供元
    CJP書誌  NDL  J-STAGE 
ページトップへ