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Vol. 146, No. 11, November 2012, pp. 182-190




Potentiometric Determination of Low Content of Water in Different Organic Solvents Using NASICON Based Probe

Department of Physics,

Indian Institute of Technology Delhi, New Delhi 110016, India

Tel.: +91-11-26591356, fax: +91-11-26581114

E-mail: parul.iit@gmail.com



Received: 3 September 2012   /Accepted: 23 November 2012   /Published: 30 November 2012

Digital Sensors and Sensor Sysstems


Abstract: NASICON is a solid state ionic material which shows high ionic conductivity. NASICON based low cost, highly sensitive sensor probe for detection of very small content of the water nearly ppm level in organic solvents has been fabricated and characterized. The sensor utilizes the potentiometric method for detection of water content in solvents. The results indicate nearly linear variation of emf with increase in water content up to 10 % with a sensitivity of 0.0075 mV per ppm. Such a high value of sensitivity is extremely useful in detection of water in medical science and chemical industries.


Keywords: Ethanol, NASICON, Potentiometry, Sol-gel, Solid state electrolyte, Water sensor



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