The H<sub>2</sub>S spectrum in the 1·6 μm spectral region

Lechuga-Fossat, L.; Flaud, J.‐M.; Camy‐Peyret, C.; Arcas, Ph.; Cuisenier, M.

doi:10.1080/00268978700100961

Cited by 20 publications

(16 citation statements)

References 9 publications

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“…Both the local mode properties, and the conditions of their destruction can be analyzed in the rovibrational spectra of H 2 S. As a consequence, numerous spectroscopic studies have been carried out on this molecule (see, for example, [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]), beginning at the low frequency microwave region [1], up to visible transitions in the highly excited stretching bands ð70 AE ; 0Þ observed by the sensitive intra-cavity laser absorption spectroscopy, [18]. The ground vibrational state was analyzed in [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…The ground vibrational state was analyzed in [1][2][3][4][5]. The lowest five poliads of interacting vibrational states, with v ¼ v 1 þ v 2 =2 þ v 3 , v ¼ 0:5, 1, 1.5, 2, 2.5, were discussed in [6][7][8][9][10][11], respectively. Highly excited stretching local mode states v ¼ 4, 4.5, 5, 6, 7 were considered in [12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

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On the study of high-resolution rovibrational spectrum of H2S in the region of 7300–7900cm−1

Ulenikov

Liu

Bekhtereva

et al. 2004

Journal of Molecular Spectroscopy

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On the study of high-resolution rovibrational spectrum of H2S in the region of 7300–7900cm−1

Ulenikov

Liu

Bekhtereva

et al. 2004

Journal of Molecular Spectroscopy

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“…In the last few decades, the absorption spectra of H 2 S have been studied extensively, with microwave [2][3][4][5][6], Fourier-transform infra-red [7][8][9][10][11][12][13], and intracavity laser absorption spectroscopy at near-IR and visible region [14][15][16][17][18][19][20][21]. But for the deuterated sample, there are just a few bands were studied with high-resolution.…”

Section: Introductionmentioning

confidence: 99%

High-resolution rotational analysis of HDS: 2ν3, ν2+2ν3, 3ν3, and ν2+3ν3 bands

Liu

Gao

Cheng

et al. 2005

Journal of Molecular Spectroscopy

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“…), extensive research and simulation was conducted by Edwards et al [28] and extended by LechugaFossat et al [29]. In this region, accurate line positions can be addressed to the (210) (111) and (102) bands.…”

Section: Spectral Characteristics Of H S In the Nir Regionmentioning

confidence: 99%

“…In this region, accurate line positions can be addressed to the (210) (111) and (102) bands. Resonances between these three states can be addressed to Coriolis interactions between the rotational levels of the (111) vibrational state and the levels of the (210) and (012) states as well as to Darling-Dennison interactions between the (210) and (012) vibrational states [29].…”

Section: Spectral Characteristics Of H S In the Nir Regionmentioning

confidence: 99%

Cantilever-enhanced photoacoustic detection of hydrogen sulfide (H2S) using NIR telecom laser sources near 1.6 µm

Moser

Lendl

2016

Appl. Phys. B

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concentrations as low as 500 pptv manifesting in the characteristic odor of rotten eggs can already be detected by the human olfactory sense, the total loss of olfactory sensation starts at 150-200 ppmv [3]. Because of the wide occurrence of H 2 S in industrial processes and its often negative impact on process stabilities and product quality, its concentration needs to be tightly monitored. Furthermore, safety considerations and legal concentration limits also necessitate the accurate determination of H 2 S levels. In practice, concentrations ranging from sub-ppm levels at low pressures to several per cents at atmospheric conditions need to be monitored. Due to such diverse requirements, H 2 S analyzers based on different measurement technologies have been developed and are in industrial use. Apart from spectroscopic techniques based on absorption measurements, a range of other analytical techniques such as pulsed UV fluorescence [4], sulfur chemiluminescence [5], colorimetry employing a lead acetate tape [6], flame photometry as detector in gas chromatography [7] as well as electrochemical detection techniques ranging from potentiometric, galvanic, coulometric and amperometric detection [8] is frequently employed. It is interesting to note that in the petrochemical industry the lead acetate tape method is still in frequent use. Also, gas chromatographic methods are popular as they can be used to detect several components almost simultaneously, but this technique requires preparation and extraction of the sample gas leading to a time-consuming measurement. A general drawback of nonspectroscopic techniques is the fact that they do not allow for direct measurements. This, however, also applies to H 2 S detection based on UV fluorescence as this technique requires sample combustion as well as detection by chemoluminescence, where addition of reagents is required.Most of the spectroscopic techniques are based on the detection of the absorption spectrum of the molecules in Abstract Sensitive detection of hydrogen sulfide (H 2 S) at different pressure levels using a cantilever-enhanced photoacoustic detector in combination with a telecom NIR L-band laser source is reported. Amplitude and wavelength modulation schemes for photoacoustic signal generation are compared. A detection limit (3σ) of 8 ppmv was achieved for amplitude modulation mode with a 50-s averaging time for the H 2 S absorption near 1.6 µm. As compared to simulated spectra, the cantilever-enhanced photoacoustic detection approach in combination with the sufficiently stable and narrow bandwidth NIR laser is able to reproduce the rotationally resolved H 2 S spectrum at low pressures of 300 mbar.

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The H₂S spectrum in the 1·6 μm spectral region

Cited by 20 publications

References 9 publications

On the study of high-resolution rovibrational spectrum of H2S in the region of 7300–7900cm−1

On the study of high-resolution rovibrational spectrum of H2S in the region of 7300–7900cm−1

High-resolution rotational analysis of HDS: 2ν3, ν2+2ν3, 3ν3, and ν2+3ν3 bands

Cantilever-enhanced photoacoustic detection of hydrogen sulfide (H2S) using NIR telecom laser sources near 1.6 µm

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The H2S spectrum in the 1·6 μm spectral region

Cited by 20 publications

References 9 publications

On the study of high-resolution rovibrational spectrum of H2S in the region of 7300–7900cm−1

On the study of high-resolution rovibrational spectrum of H2S in the region of 7300–7900cm−1

High-resolution rotational analysis of HDS: 2ν3, ν2+2ν3, 3ν3, and ν2+3ν3 bands

Cantilever-enhanced photoacoustic detection of hydrogen sulfide (H2S) using NIR telecom laser sources near 1.6 µm

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The H₂S spectrum in the 1·6 μm spectral region