Infrared absorption spectrum of nitrous oxide (N2O) from 1830 cm-1 to 2270 cm-1

Plyler, Earle K.; Tidwell, Eugene D.; Maki, Arthur G.

doi:10.6028/jres.068a.006

Cited by 22 publications

(3 citation statements)

References 9 publications

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“…Nitrous oxide has a pronounced absorption band within the mid-infrared spectral range associated with the fundamental ν 3 vibration of the N 2 O molecule located at 2270–2160 cm −1 (Fig. 1 ) 29 . However, a spectral interference caused by broadening of the CO 2 band has been identified during real-world sample evaluation.…”

Section: Discussionmentioning

confidence: 99%

A Hyphenated Preconcentrator-Infrared-Hollow-Waveguide Sensor System for N2O Sensing

Petruci

Wilk

Cardoso

et al. 2018

Sci Rep

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Following the Kyoto protocol, all signatory countries must provide an annual inventory of greenhouse-gas emission including N2O. This fact associated with the wide variety of sources for N2O emissions requires appropriate sensor technologies facilitating in-situ monitoring, compact dimensions, ease of operation, and sufficient sensitivity for addressing such emission scenarios. In this contribution, we therefore describe an innovative portable mid-infrared chemical sensor system for quantifying gaseous N2O via coupling a substrate-integrated hollow waveguide (iHWG) simultaneously serving as highly miniaturized mid-infrared photon conduit and gas cell to a custom-made preconcentrator. N2O was collected onto a solid sorbent material packed into the preconcentrator unit, and then released via thermal desorption into the iHWG-MIR sensor utilizing a compact Fourier transform infrared (FTIR) spectrometer for molecularly selective spectroscopic detection with a limit of detection (LOD) at 5 ppbv. Highlighting the device flexibility in terms of sampling time, flow-rate, and iHWG design facilitates tailoring the developed preconcentrator-iHWG device towards a wide variety of application scenarios ranging from soil and aquatic emission monitoring and drone- or unmanned aerial vehicle (UAV)-mounted monitoring systems to clinical/medical analysis scenarios.

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Section: Discussionmentioning

confidence: 99%

A Hyphenated Preconcentrator-Infrared-Hollow-Waveguide Sensor System for N2O Sensing

Petruci

Wilk

Cardoso

et al. 2018

Sci Rep

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“…In order to confirm that N 2 O absorptions were identified correctly, the FTIR spectrum of a 5-ppm standard N 2 O gas was also recorded. [19]. The N 2 O absorption bands located between 2400 -2600 cm −1 include a harmonic band of 2ν 1 and a combination band of ν 1 + 2ν 2 [20] which are relatively weak absorptions.…”

Section: Ftir Spectra Of the Silage Gas And Verification Of N2o Peaksmentioning

confidence: 96%

Detecting Nitrous Oxide in Complex Mixtures Using FTIR Spectroscopy: Silage Gas

Zhao¹,

Wexler²,

Hase³

et al. 2016

JEP

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Nitrous oxide (N 2 O) is a greenhouse gas with about 300 times the global warming potential (GWP) of carbon dioxide (CO 2 ). It is emitted from a wide range of sources and is responsible for about 6% of anthropogenic US greenhouse gas emissions. Analytical techniques are needed that can measure concentrations of N 2 O rapidly and inexpensively in sources that are also emitting other compounds that may interfere with the analytical process. In this work, we demonstrate the use of Fourier Transform Infrared (FTIR) spectroscopy to analyze N 2 O in the complex mixture of gases produced during the early phase of the silage making process. Silage gas samples were collected into Tedlar bags from the bucket silos during the first week of corn ensiling. A bag of the silage gas was analyzed using a Bruker FTIR spectrometer coupled with a long optical path length White Cell. First, N 2 O infrared absorption bands were identified in the FTIR spectra of the silage gas by comparing them to both standard N 2 O gas and simulated infrared spectra which confirmed that N 2 O was present in the silage gas. Then, N 2 O concentration in the silage gas was derived from the FTIR spectra using LINEFIT program. It was demonstrated that FTIR spectroscopy is a viable method for measuring N 2 O concentrations in the silage gas.

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“…The wavelength was close to the lower side of the emission spectrum, where the absorption coefficient of N 2 O is higher, compared to that in the C and L band regions. N 2 O gas has three fundamental infrared active absorption bands: 1 = 1284.9 cm −1 ∼7.8 m; 2 = 588.8 cm −1 ∼17 m; and 3 = 2223.8 cm −1 ∼4.5 m. A number of articles, reporting results from different spectroscopic techniques such as Fourier Transform Infrared Absorption Spectroscopy (FTIR), Intracavity Laser Absorption Spectroscopy (ICLAS), and cavity ring-down spectroscopy (CRDS), identify transitions in the overtone bands for N 2 O gas [7][8][9][10][11][12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

A Gas Cell Based on Hollow-Core Photonic Crystal Fiber (PCF) and Its Application for the Detection of Greenhouse Gas (GHG): Nitrous Oxide (N₂O)

2016

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The authors report the detection of nitrous oxide gas using intracavity fiber laser absorption spectroscopy. A gas cell based on a hollow-core photonic crystal fiber was constructed and used inside a fiber ring laser cavity as an intracavity gas cell. The fiber laser in the 1.55 μm band was developed using a polarization-maintaining erbium-doped fiber as the gain medium. The wavelength of the laser was selected by a fiber Bragg grating (FBG), and it matches one of the absorption lines of the gas under investigation. The laser wavelength contained multilongitudinal modes, which increases the sensitivity of the detection system. N2O gas has overtones of the fundamental absorption bands and rovibrational transitions in the 1.55 μm band. The system was operated at room temperature and was capable of detecting nitrous oxide gas at sub-ppmv concentration level.

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Infrared absorption spectrum of nitrous oxide (N2O) from 1830 cm-1 to 2270 cm-1

Cited by 22 publications

References 9 publications

A Hyphenated Preconcentrator-Infrared-Hollow-Waveguide Sensor System for N2O Sensing

A Hyphenated Preconcentrator-Infrared-Hollow-Waveguide Sensor System for N2O Sensing

Detecting Nitrous Oxide in Complex Mixtures Using FTIR Spectroscopy: Silage Gas

A Gas Cell Based on Hollow-Core Photonic Crystal Fiber (PCF) and Its Application for the Detection of Greenhouse Gas (GHG): Nitrous Oxide (N₂O)

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Infrared absorption spectrum of nitrous oxide (N2O) from 1830 cm-1 to 2270 cm-1

Cited by 22 publications

References 9 publications

A Hyphenated Preconcentrator-Infrared-Hollow-Waveguide Sensor System for N2O Sensing

A Hyphenated Preconcentrator-Infrared-Hollow-Waveguide Sensor System for N2O Sensing

Detecting Nitrous Oxide in Complex Mixtures Using FTIR Spectroscopy: Silage Gas

A Gas Cell Based on Hollow-Core Photonic Crystal Fiber (PCF) and Its Application for the Detection of Greenhouse Gas (GHG): Nitrous Oxide (N2O)

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A Gas Cell Based on Hollow-Core Photonic Crystal Fiber (PCF) and Its Application for the Detection of Greenhouse Gas (GHG): Nitrous Oxide (N₂O)