S.V. Drobyshev1, T.M. Shaykhattarov2, I.R. Nizameev3

1-3 Kazan National Research Technical University named after A.N. Tupolev - KAI (Kazan, Russia)

3 Arbuzov Institute of Organic and Physical Chemistry,
FRC Kazan Scientific Center, Russian Academy of Sciences (Kazan, Russia)

1 sergejdrobysev.bass@gmail.com; 2 tagir80.40@gmail.com; 3 inizameyev@iopc.ru

High levels of air pollution lead to various negative consequences, including deterioration in public health. One of the main air pollutants in industrial cities is nitrogen dioxide. Nitrogen dioxide (NO2) is produced by various industrial processes. It is highly toxic and can cause various diseases such as bronchitis, asthma and other respiratory diseases. Despite all efforts to reduce NO2 emissions, the problem of air pollution remains relevant. Therefore, it is important to continue research into the development of new methods for continuous atmospheric monitoring and timely detection of emissions. One of the main tasks of the modern branch of science in the development of a monitoring system is the development of a sensitive, reliable and inexpensive gas sensor for NO2 in the air. The tasks of this work are design, construct, assemble and test a new original electronic control and measurement unit for a previously developed conductometric sensor for nitrogen dioxide in the atmosphere which is capable of recording and interpreting the signal in the form of a numerical response and displaying it on the screen. As a result of the work carried out, a new original electronic control and measurement unit was developed and constructed for the previously developed conductometric gas sensor for nitrogen dioxide in the atmosphere which is capable of recording and interpreting the signal in the form of a numerical response and displaying it on the screen. The developed device was tested in a system with a gas sensor with a p-type semiconductor gas-sensitive element. It has been established that for a model atmosphere of 50 ppm NO2 + N2, the sensor response recorded by the developed device is equal to (10,4 ± 0,2)∙10-3, and for a model atmosphere of 10 ppm NO2 + N2 – (6,2 ± 0,2)∙10-3. The obtained values can be used to determine the concentration of nitrogen dioxide under real atmospheric monitoring conditions.

The reported study was funded by the government assignment for the FRC Kazan Scientific Center of RAS.

Drobyshev S.V., Shaykhattarov T.M., Nizameev I.R. Electronic control and measurement unit of conductometric nitrogen dioxide
sensor in the atmosphere. Radiotekhnika. 2024. V. 88. № 1. P. 111−120. DOI: https://doi.org/10.18127/j00338486-202401-10
(In Russian)

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