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Journal of Analytical Chemistry

, Volume 55, Issue 6, pp 598–604 | Cite as

Piezoresonance sensor for ammonia with polymaleic acid as the sensitive coating

  • A. A. Grechnikov
  • A. N. Mogilevskii
  • I. P. Galkina
  • B. F. Maysoedov
  • E. D. Alieva
  • N. I. Trukhmanova
  • T. L. Lebedeva
  • N. A. Platè
Articles

Abstract

Results of the study of a piezoresonance sensor with polymaleic acid as the sensitive coating for the determination of the concentration of ammonia in air are presented. The influence of the mass of the polymer coating, the flow rate of the carrier gas, and relative humidity on the performance characteristics of the sensor was studied. The mechanism of the interaction of ammonia with the sorbent in the presence of water vapors is proposed based on experimental data and quantum chemical calculation. It is found that the sensor exhibits high selectivity for ammonia in the presence of vapors of saturated and aromatic hydrocarbons. The detection limit for ammonia at the humidity 45–55% is 0.04 mg/m3, which makes it possible to determine ammonia at a level of the maximum permissible concentration for inhabited areas; the concentration characteristic of the sensor is linear in the concentration range 0.04-40 mg/m3.

Keywords

DMSA Polymaleic Acid Quartz Resonator Flow Control Valve Sensitive Coating 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© MAIK “Nauka/Interperiodica” 2000

Authors and Affiliations

  • A. A. Grechnikov
    • 1
  • A. N. Mogilevskii
    • 1
  • I. P. Galkina
    • 1
  • B. F. Maysoedov
    • 1
  • E. D. Alieva
    • 2
  • N. I. Trukhmanova
    • 2
  • T. L. Lebedeva
    • 2
  • N. A. Platè
    • 2
  1. 1.Vernadsky Institute of Geochemistry and Analytical ChemistryRussian Academy of SciencesMoscowRussia
  2. 2.Topchiev Institute of Petrochemical SynthesisRussian Academy of SciencesMoscowRussia

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