Methods for Processing Mass Spectrometry Signals from Exhaled Gases for Medical Diagnosis

Манойлов, В. В.; Novikov, L. V.; Zarutskiĭ, I. V.; Kuzmin, A. G.; Titov, Yu. A.

doi:10.1007/s10527-020-09942-0

Cited by 4 publications

(4 citation statements)

References 7 publications

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“…The carried out primary transformations provide stability of an initial analytical signal, which, as much as possible, smoothes insignificant fluctuations of molecules of the defined substance and practically eliminates the influence of hardware noise, thereby increasing stability of «the zero line»-background measurements [9].…”

Section: Gaged Tension and Current Mean Valuesmentioning

confidence: 99%

“…The current mean value of tension and dispersion uniquely determinates a normal distribution in each point of measurement and if U(t) − U(t) < ε ⇒ f (p) → δ , where ε and δ are infinitesimal sizes than Z(t) = U(t) − U(t) 2 → δ . The carried out primary transformations provide stability of an initial analytical signal, which, as much as possible, smoothes insignificant fluctuations of molecules of the defined substance and practically eliminates the influence of hardware noise, thereby increasing stability of «the zero line»-background measurements [9].…”

Section: Gaged Tension and Current Mean Valuesmentioning

confidence: 99%

“…It should be noted that the semiconductor sensors manufactured on the basis of tin dioxide (SnO 2 ) alloyed by electromanaging and catalytic impurity fully meet the requirements of modern gas analysis [8]. The gas analysis system that is constructed on the basis of semiconductor sensors and the microprocessor equipment replaces, in many cases, difficult analytical equipment such as chromatographs, IR spectrometers, mass-spectrometers, chromass-spectrometers, and other expensive devices demanding highly skilled service [9].…”

Section: Introductionmentioning

confidence: 99%

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Multisensory Gas Analysis System Based on Reconstruction Attractors

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Кулагин

El-Saleem³

et al. 2020

Symmetry

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The paper describes the substance image formation based on the measurements by multisensor systems and the possibility of the development of a gas analysis device like an electronic nose. Classification of gas sensors and the need for their application for the recognition of difficult images of multicomponent air environments are considered. The image is formed based on stochastic transformations, calculations of correlation, and fractal dimensions of reconstruction attractors. The paper shows images created for substances with various structures that were received with the help of a multisensor system under fixed measurement conditions.

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Section: Gaged Tension and Current Mean Valuesmentioning

confidence: 99%

Section: Gaged Tension and Current Mean Valuesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Multisensory Gas Analysis System Based on Reconstruction Attractors

Черемисина

Кулагин

El-Saleem³

et al. 2020

Symmetry

View full text Add to dashboard Cite

show abstract

“…Gas detection plays an essential role in atmospheric pollution monitoring, combustion diagnosis, industrial process control, clinical breath analysis, and so forth. 1 To date, various techniques have been developed for trace gas detection, 2 such as electrochemical sensors, 3 mass spectrometry, 4 and optical spectroscopy. [5][6][7][8][9][10] One sensitive and promising optical gas sensing methods is tunable diode laser absorption spectroscopy (TDLAS), which has good gas selectivity and sensitivity, and fast response.…”

Section: Introductionmentioning

confidence: 99%

Carbon‐based light‐induced thermoelastic spectroscopy for ammonia gas sensing

Wang

Cheng

Lou

et al. 2022

Micro & Optical Tech Letters

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A light-induced thermoelastic spectroscopy (LITES) based on carbon nanotubes (CNT), graphene oxide (GO), and reduced graphene oxide (rGO) coated quartz tuning fork (QTF) was proposed. In order to improve the conversion efficiency of laser energy radiation into the vibration of tuning fork, thin CNT, GO, and rGO layers were coated on the surface of commercial QTF, respectively. Ammonia (NH 3 ) gas was selected as the target analyte for the experimental validation. The experimental results show that the system's maximum gain factor in signal amplitude and signal-to-noise ratio (SNR) are 1.52, 1.53, 2.43, and 1.54, 1.33, 2.24 times, respectively, as compared with the traditional LITES with bare QTF.

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Polymer-coated quartz tuning fork for enhancing the sensitivity of laser-induced thermoelastic spectroscopy

Lou

Chen

et al. 2021

Opt. Express

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A novel laser-induced thermoelastic spectroscopy (LITES) sensor based on a polymer-coated quartz tuning fork (QTF) is reported. Two types of polymer films with different thicknesses are deposited on commercially available QTF to improve the conversion efficiency of laser energy deposition into vibration. CO2 was selected as the target analyte for validation measurements. The experimental results indicate that by introducing a polymer coating, a maximum gain factor of 3.46 and 3.21 is attained for the signal amplitude and signal-to-noise ratio (SNR), respectively, when compared to traditional LITES that using only a bare QTF. A minimum detectable concentration of 0.181% can be obtained, corresponding to a normalized noise equivalent absorption coefficient (NNEA) of 1.74×10−11 cm−1·W·Hz−1/2, and the measurement precision is approximately 0.06% with an averaging time of 200 s. Here, we show what we believe is the first demonstration of polymer coated QTF for LITES sensing, compared with custom QTF, the design has the virtues of lower cost, simple and easy-to-operate, is a promising new strategy for sensitive trace gas analysis.

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Methods for Processing Mass Spectrometry Signals from Exhaled Gases for Medical Diagnosis

Cited by 4 publications

References 7 publications

Multisensory Gas Analysis System Based on Reconstruction Attractors

Multisensory Gas Analysis System Based on Reconstruction Attractors

Carbon‐based light‐induced thermoelastic spectroscopy for ammonia gas sensing

Polymer-coated quartz tuning fork for enhancing the sensitivity of laser-induced thermoelastic spectroscopy

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