Evaluation of Limiting Sensitivity of the One-Color Laser Fragmentation/Laser-Induced Fluorescence Method in Detection of Nitrobenzene and Nitrotoluene Vapors in the Atmosphere
The paper presents the results of a numerical evaluation of limiting sensitivity of the method for detecting vapors of nitrocompounds in the atmosphere based on one-color laser fragmentation (LF)/laser-induced fluorescence (LIF) of NO fragments via A<sup>2</sup>Σ<sup>+<...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-11-01
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| Series: | Atmosphere |
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| Online Access: | https://www.mdpi.com/2073-4433/10/11/692 |
| _version_ | 1818314882800418816 |
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| author | Sergei Bobrovnikov Evgeny Gorlov Viktor Zharkov |
| author_facet | Sergei Bobrovnikov Evgeny Gorlov Viktor Zharkov |
| author_sort | Sergei Bobrovnikov |
| collection | DOAJ |
| description | The paper presents the results of a numerical evaluation of limiting sensitivity of the method for detecting vapors of nitrocompounds in the atmosphere based on one-color laser fragmentation (LF)/laser-induced fluorescence (LIF) of NO fragments via A<sup>2</sup>Σ<sup>+</sup> (v′ = 0) ← X<sup>2</sup>Π (v″ = 2) transition. The calculations were performed using the developed kinetic model of the one-color LF/LIF process under consideration. The calculations take into account the influence of ambient nitrogen dioxide as a limiter of the sensitivity of the method when operating in a real atmosphere. It is shown that if the nitrogen dioxide concentration in the atmosphere does not exceed a value of 10 ppb, the maximum detectable vapor concentrations of nitrobenzene and <i>o</i>-nitrotoluene are several ppb. It is also shown that the method of single-frequency one-color excitation usually used for the detection of nitrocompounds does not allow achieving the maximum efficiency of the LF/LIF process. |
| first_indexed | 2024-12-13T08:56:42Z |
| format | Article |
| id | doaj.art-d31910a8cc244ab889e83096e4338605 |
| institution | Directory Open Access Journal |
| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-12-13T08:56:42Z |
| publishDate | 2019-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj.art-d31910a8cc244ab889e83096e43386052022-12-21T23:53:16ZengMDPI AGAtmosphere2073-44332019-11-01101169210.3390/atmos10110692atmos10110692Evaluation of Limiting Sensitivity of the One-Color Laser Fragmentation/Laser-Induced Fluorescence Method in Detection of Nitrobenzene and Nitrotoluene Vapors in the AtmosphereSergei Bobrovnikov0Evgeny Gorlov1Viktor Zharkov2Center of Laser Atmosphere Sensing, V.E. Zuev Institute of Atmospheric Optics SB RAS, 634055 Tomsk, RussiaCenter of Laser Atmosphere Sensing, V.E. Zuev Institute of Atmospheric Optics SB RAS, 634055 Tomsk, RussiaCenter of Laser Atmosphere Sensing, V.E. Zuev Institute of Atmospheric Optics SB RAS, 634055 Tomsk, RussiaThe paper presents the results of a numerical evaluation of limiting sensitivity of the method for detecting vapors of nitrocompounds in the atmosphere based on one-color laser fragmentation (LF)/laser-induced fluorescence (LIF) of NO fragments via A<sup>2</sup>Σ<sup>+</sup> (v′ = 0) ← X<sup>2</sup>Π (v″ = 2) transition. The calculations were performed using the developed kinetic model of the one-color LF/LIF process under consideration. The calculations take into account the influence of ambient nitrogen dioxide as a limiter of the sensitivity of the method when operating in a real atmosphere. It is shown that if the nitrogen dioxide concentration in the atmosphere does not exceed a value of 10 ppb, the maximum detectable vapor concentrations of nitrobenzene and <i>o</i>-nitrotoluene are several ppb. It is also shown that the method of single-frequency one-color excitation usually used for the detection of nitrocompounds does not allow achieving the maximum efficiency of the LF/LIF process.https://www.mdpi.com/2073-4433/10/11/692laser fragmentationlaser-induced fluorescencedetectionnitrobenzenenitrotoluene |
| spellingShingle | Sergei Bobrovnikov Evgeny Gorlov Viktor Zharkov Evaluation of Limiting Sensitivity of the One-Color Laser Fragmentation/Laser-Induced Fluorescence Method in Detection of Nitrobenzene and Nitrotoluene Vapors in the Atmosphere Atmosphere laser fragmentation laser-induced fluorescence detection nitrobenzene nitrotoluene |
| title | Evaluation of Limiting Sensitivity of the One-Color Laser Fragmentation/Laser-Induced Fluorescence Method in Detection of Nitrobenzene and Nitrotoluene Vapors in the Atmosphere |
| title_full | Evaluation of Limiting Sensitivity of the One-Color Laser Fragmentation/Laser-Induced Fluorescence Method in Detection of Nitrobenzene and Nitrotoluene Vapors in the Atmosphere |
| title_fullStr | Evaluation of Limiting Sensitivity of the One-Color Laser Fragmentation/Laser-Induced Fluorescence Method in Detection of Nitrobenzene and Nitrotoluene Vapors in the Atmosphere |
| title_full_unstemmed | Evaluation of Limiting Sensitivity of the One-Color Laser Fragmentation/Laser-Induced Fluorescence Method in Detection of Nitrobenzene and Nitrotoluene Vapors in the Atmosphere |
| title_short | Evaluation of Limiting Sensitivity of the One-Color Laser Fragmentation/Laser-Induced Fluorescence Method in Detection of Nitrobenzene and Nitrotoluene Vapors in the Atmosphere |
| title_sort | evaluation of limiting sensitivity of the one color laser fragmentation laser induced fluorescence method in detection of nitrobenzene and nitrotoluene vapors in the atmosphere |
| topic | laser fragmentation laser-induced fluorescence detection nitrobenzene nitrotoluene |
| url | https://www.mdpi.com/2073-4433/10/11/692 |
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