Practical nitrate sensor based on electrochemical impedance measurement

M. E. E. Alahi, Li Xie, Asif I. Zia, Subhas Mukhopadhyay, Lucy Burkitt

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

10 Citations (Scopus)

Abstract

This paper showcases the design and development of a portable sensing system that could be used in-situ to detect the concentrations of nitrate salts present in the groundwater. Electrochemical Impedance Spectroscopy was employed to identify and display nitrate concentrations by using planar interdigital sensor immersed in the stream water samples. Calibration samples were prepared by serial dilution of the nitrate stock solution in the laboratory and test samples were collected from different surface water sources. The test samples were evaluated by the commercial equipment and designed system. Although a difference was observed between these two results, the designed system showed a good linear relationship between the measured nitrate concentrations (range from 0.1 to 0.5 mg/L) of the water solution in the real part of the impedance. The promising comparative results announced the extraordinary potential of the developed system for its in-situ nitrate contamination detection with real-time monitoring.

Original languageEnglish
Title of host publication2016 IEEE International Instrumentation and Measurement Technology Conference (I²MTC 2016) Proceedings
Subtitle of host publicationMeasuring the Pulse of Industries, Nature and Humans
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1-6
Number of pages6
ISBN (Electronic)9781467392204
DOIs
Publication statusPublished - 22 Jul 2016
Externally publishedYes
Event2016 IEEE International Instrumentation and Measurement Technology Conference, I2MTC 2016 - Taipei, Taiwan, Province of China
Duration: 23 May 201626 May 2016

Other

Other2016 IEEE International Instrumentation and Measurement Technology Conference, I2MTC 2016
CountryTaiwan, Province of China
CityTaipei
Period23/05/1626/05/16

Keywords

  • electrochemical impedance spectroscopy
  • Nitrate Detection
  • planar interdigital sensor
  • water contamination

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