Chemosorption processes and ammonia detection in the system, including MOX-sensor and microreactor

  • Alexey V. Shaposhnik professor, chair of chemistry, Voronezh State Agrarian University, Voronezh, e-mail: a.v.shaposhnik@gmail.com
  • Alexey A. Zviagin postdoctoral research fellow, chair of chemistry, Voronezh State Agrarian University, Voronezh, e-mail: a.a.zviagin@rambler.com
  • Svetlana N. Korchagina postgraduate student, chair of chemistry, Voronezh State Agrarian University, Voronezh
  • Stanislav V. Ryabtsev head of laboratory, Voronezh State University, chair of solid state physics and nanostructures, Voronezh
  • Dmitriy A. Shaposhnik postgraduate student, chair of analytic chemistry, Voronezh State University, Voronezh
Keywords: MOX-sensor, converter, microreactor, ammonia detection, ammonia conversion, nitrogen oxides, selectivity, stability.

Abstract

We report a device for selective detection of ammonia. The device consists of a MOX sensor and
a converter transforming ammonia into nitrogen dioxide. When the converter is switched off, the sensor
mainly detects ammonia (donor signal), and when the converter turned on, the sensor detects nitrogen
dioxide (acceptor signal). The analytical signal is a normalized difference between the sensor signals
when the converter is working and when it is turned off. The main advantage of this method is high
selectivity of ammonia detection. Another advantage is the solution of the problem of sensor drift.

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References

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Published
2019-11-22
How to Cite
Shaposhnik, A. V., Zviagin, A. A., Korchagina, S. N., Ryabtsev, S. V., & Shaposhnik, D. A. (2019). Chemosorption processes and ammonia detection in the system, including MOX-sensor and microreactor. Sorbtsionnye I Khromatograficheskie Protsessy, 12(2). Retrieved from https://journals.vsu.ru/sorpchrom/article/view/1780
Issue
Vol 12 No 2 (2012): Sorbtsionnye i Khromatograficheskie Protsessy
Section
Статьи