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- 2024
- 2023
- 2022
Chemometric Analysis of the Operation of PdO Thin Films as a Chemical Sensor for Ozone Molecules in the Atmosphere
Chistyakov V. V/
1, Ryabtsev S. V.
2, Al-Habeeb A. A. K.2, Soloviev S. M.
1, Turishchev S. Yu.
2
1Ioffe Institute, St. Petersburg, Russia
2Voronezh State University, Voronezh, Russia
2Voronezh State University, Voronezh, Russia
Email: v.chistyakov@mail.ioffe.ru, ryabtsev@phys.vsu.ru, azalalhabeeb8582@gmail.com, serge.soloviev@mail.ioffe.ru, tsu@phys.vsu.ru
Raw S and extracted Sextr conductivity responses of thin (30 nm) films of thermic palladium (II) p-type oxide under harmonic modulation of temperature T K were studied, and the temperature hysteresis of the Sextr and T was investigated. It is found that the dependences of Sextr on the ozone concentration of C ppb and the T K obey with good accuracy (adj-R2>0.995) the Jovanovitch formula. For the first time a conductometric version of temperature-programmable desorption (TPD) of ozone ppb concentrations from PdO surface was applied. Based on the TPD-data, a conductometric analogue of the Wiegner-Polyani equation was specified, which monotonic with the C ppb parameters may serve as variates for multivariate calibration (MC) for selective ozone in atmosphere detection. Keywords: temperature modulation, hysteresis, TPD, nonlinear regression, Wiegner-Polyani equation, multivariate calibration,selectivity.
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