Determination Of Gas Mixture Components Using Fluctuation Enhanced Sensing And The LS-SVM Regression Algorithm

Lentka, Łukasz; Smulko, Janusz; Ionescu, Radu; Granqvist, Claes G.; Kish, László B.

doi:10.1515/mms-2015-0039

Cited by 55 publications

(32 citation statements)

References 19 publications

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“…In a real application, the sensor may be under an environment with different gases at the same time. This could generate signal interference as reported in the literature [48,49].…”

Section: Low Molecular Weight Amines Detectionmentioning

confidence: 77%

Impedimetric Detection of Ammonia and Low Molecular Weight Amines in the Gas Phase with Covalent Organic Frameworks

Rodríguez

Rico

Sierra

et al. 2020

Sensors

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Two Covalent Organic Frameworks (COF), named TFP-BZ and TFP-DMBZ, were synthesized using the imine condensation between 1,3,5-triformylphloroglucinol (TFP) with benzidine (BZ) or 3,3-dimethylbenzidine (DMBZ). These materials were deposited, such as films over interdigitated electrodes (IDE), by chemical bath deposition, giving rise to TFP-BZ-IDE and TFP-DMBZ-IDE systems. The synthesized COFs powders were characterized by Powder X-Ray Diffraction (PXRD), Fourier Transform Infrared spectroscopy (FT-IR), solid-state Nuclear Magnetic Resonance (ssNMR), nitrogen adsorption isotherms, Scanning Electron Microscopy (SEM), and Raman spectroscopy, while the films were characterized by SEM and Raman. Ammonia and low molecular weight amine sensing were developed with the COF film systems using the impedance electrochemical spectroscopy (EIS). Results showed that the systems TFP-BZ-IDE and TFP-DMBZ-IDE detect low molecular weight amines selectively by impedimetric analysis. Remarkably, with no significant interference by other atmospheric gas compounds such as nitrogen, carbon dioxide, and methane. Additionally, both COF films presented a range of sensitivity at low amine concentrations below two ppm at room temperature.

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“…In a real application, the sensor may be under an environment with different gases at the same time. This could generate signal interference as reported in the literature [48,49].…”

Section: Low Molecular Weight Amines Detectionmentioning

confidence: 77%

Impedimetric Detection of Ammonia and Low Molecular Weight Amines in the Gas Phase with Covalent Organic Frameworks

Rodríguez

Rico

Sierra

et al. 2020

Sensors

View full text Add to dashboard Cite

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“…The recorded noise exhibited the 1/f noise. We suppose that some degradation processes in the supercapacitor structure change its slope as in the case of 1/f-like noise generated in other porous materials for gas sensing [16]. Such information should be valuable for quality assessment of the tested supercapacitors.…”

Section: Resultsmentioning

confidence: 99%

Measurement of Noise in Supercapacitors

Szewczyk

2017

Metrology and Measurement Systems

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A developed method and measurement setup for measurement of noise generated in a supercapacitor is presented. The requirements for noise data recording are considered and correlated with working modes of supercapacitors. An example of results of low-frequency noise measurements in commercially available supercapacitors are presented. The ability of flicker noise measurements suggests that they can be used to assess quality of tested supercapacitors.

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“…TiO2, WO3) [15,25,26]. Application of UV light means that the sensor operates in a lower temperature and that the response time can be also reduced.…”

Section: Semiconductor Gas Sensorsmentioning

confidence: 99%

Detection of Gaseous Compounds with Different Techniques

Mikołajczyk

Bielecki

Stacewicz

et al. 2016

Metrology and Measurement Systems

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Sensing technology has been developed for detection of gases in some environmental, industrial, medical, and scientific applications. The main tasks of these works is to enhance performance of gas sensors taking into account their different applicability and scenarios of operation. This paper presents the descriptions, comparison and recent progress in some existing gas sensing technologies. Detailed introduction to optical sensing methods is presented. In a general way, other kinds of various sensors, such as catalytic, thermal conductivity, electrochemical, semiconductor and surface acoustic wave ones, are also presented. Furthermore, this paper focuses on performance of the optical method in detecting biomarkers in the exhaled air. There are discussed some examination results of the constructed devices. The devices operated on the basis of enhanced cavity and wavelength modulation spectroscopies. The experimental data used for analyzing applicability of these different sensing technologies in medical screening. Several suggestions related to future development are also discussed.

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Determination Of Gas Mixture Components Using Fluctuation Enhanced Sensing And The LS-SVM Regression Algorithm

Cited by 55 publications

References 19 publications

Impedimetric Detection of Ammonia and Low Molecular Weight Amines in the Gas Phase with Covalent Organic Frameworks

Impedimetric Detection of Ammonia and Low Molecular Weight Amines in the Gas Phase with Covalent Organic Frameworks

Measurement of Noise in Supercapacitors

Detection of Gaseous Compounds with Different Techniques

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