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Sensors and actuators. B, Chemical v.259, 2018년, pp.753 - 761   SCI SCIE SCOPUS
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Imprinted polymer coated impedimetric nitrate sensor for real- time water quality monitoring

Alahi, Md. Eshrat E. (The School of Engineering Macquarie University, NSW 2109, Australia ) ; Mukhopadhyay, Subhas Chandra (The School of Engineering Macquarie University, NSW 2109, Australia ) ; Burkitt, Lucy (Institute of Agriculture and Environment, Massey University, Palmerston North, New Zealand ) ;
  • 초록  

    Abstract The need to determine the nitrate-nitrogen (N) concentration in water with more advanced, inexpensive and accurate sensing systems is pressing. Existing sensing systems are costly, and due to their limitations, they are difficult to use in a continuous real-time monitoring program. Ion-imprinted polymer (IIPs) is a useful technique, which allows the development of low-cost sensors with selective recognition elements. Current research has confirmed that IIPs can be combined into interdigital sensor platforms, for nitrate-N detection in aqueous media. The sensing method is based on electrochemical impedance spectroscopy (EIS) with IIP coating material, and allowing the precise detection of nitrate-N in the range of 1–10 (mg/L). Unknown samples are measured to validate the sensing method. An earlier reported sensing system is used to determine the unknown sample, which is compared with commercial sensors. Results were validated using the standard UV-spectrometric method. Highlights MEMS-based planar interdigital sensor is used for detection. Imprinting technique employed to induce nitrate-N selectivity on sensor coating. The detection limit of nitarte-N is 1–10 mg/L. UV-Spectrometry has been used to validate all the results. Internet of Things (IoT) enabled smart sensing is proposed.


  • 주제어

    Ion imprinting polymer .   Electrochemical impedance spectroscopy .   Nitrate-N .   Sensing system.  

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