Preliminary results of an aircraft system based on near-IR diode lasers for continuous measurements of the concentration of methane, carbon dioxide, water and its isotopes

Nadezhdinsky, A.I.; Ponurovsky, Ya.Ya.; Shapovalov, Yu. P.; Popov, I. P.; Stavrovsky, D.B.; Khattatov, V. U.; Galaktionov, V. V.; Kuz’michev, A. S.

doi:10.1007/s00340-012-5226-z

Cited by 5 publications

(2 citation statements)

References 10 publications

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“…Nowadays isotope ratio laser spectrometry (IRLS) becomes a serious competitor to IRMS. Water isotope spectrometers operating in the near infrared around 1.4 μm [ 12 – 14 ], in the mid infrared at 2.7 μm [ 15 , 16 ] and 6.7 μm [ 17 , 18 ] have been developed. Cavity enhanced spectroscopy approaches have been implemented for achieving high sensitivity and high precision [ 18 – 20 ].…”

Section: Introductionmentioning

confidence: 99%

Measurement of the D/H, 18O/16O, and 17O/16O Isotope Ratios in Water by Laser Absorption Spectroscopy at 2.73 μm

Chen

Fertein

et al. 2014

Sensors

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A compact isotope ratio laser spectrometry (IRLS) instrument was developed for simultaneous measurements of the D/H, 18O/16O and 17O/16O isotope ratios in water by laser absorption spectroscopy at 2.73 μm. Special attention is paid to the spectral data processing and implementation of a Kalman adaptive filtering to improve the measurement precision. Reduction of up to 3-fold in standard deviation in isotope ratio determination was obtained by the use of a Fourier filtering to remove undulation structure from spectrum baseline. Application of Kalman filtering enables isotope ratio measurement at 1 s time intervals with a precision (<1‰) better than that obtained by conventional 30 s averaging, while maintaining a fast system response. The implementation of the filter is described in detail and its effects on the accuracy and the precision of the isotope ratio measurements are investigated.

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Section: Introductionmentioning

confidence: 99%

Measurement of the D/H, 18O/16O, and 17O/16O Isotope Ratios in Water by Laser Absorption Spectroscopy at 2.73 μm

Chen

Fertein

et al. 2014

Sensors

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“…As a strong contestant to IRMS, optical techniques are frequently employed to determine the stable isotope abundance ratios and have attracted a growing interest in recent years. − At present, isotope ratio laser spectrometry (IRLS) has been widely recognized as a powerful tool to perform in situ and real-time continuous measurements of the stable isotope ratios without requiring chemical conversion in a large variety of environments. Water isotope analyzers based on IRLS have been developed. ,,− High precision and high sensitivity IRLS instruments based on OA-ICOS (off-axis integrated cavity output spectroscopy) and CRDS (cavity ring down spectroscopy) methods are now commercially available from LGR Inc. (Los Gatos Research, CA) − and Picarro Inc. (Santa Clara, CA) to implement the measurements of the stable isotope ratios. − However, these two products are expensive for some scientific researchers.…”

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confidence: 99%

Analysis of the Stable Isotope Ratios (¹⁸O/¹⁶O, ¹⁷O/¹⁶O, and D/H) in Glacier Water by Laser Spectrometry

et al. 2020

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A compact isotope ratio sensor based on laser absorption spectroscopy at 2.7 μm was developed for high precision and simultaneous measurements of the D/H, 18 O/ 16 O and 17 O/ 16 O isotope ratios in glacier water. Measurements of the oxygen and hydrogen isotope ratios in glacier water demonstrate a 1σ precision of 0.3‰ for δ 18 O, 0.2‰ for δ 17 O, and 0.5‰ for δ 2 H, respectively. The δ values of the working standard glacier water obtained by the calibrated sensor system is basically identical to the IRMS measurement results with a very high calibration accuracy from 0.17‰ to 0.75‰. Preliminary results on the reproducibility measurements display a standard deviation of 0.13‰ for δ 18 O, 0.13‰ for δ 17 O, and 0.64‰ for δ 2 H, respectively.

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Lidar-based remote infrared gas sensor for monitoring anthropogenic pollution: a proof of concept

Meshcherinov¹,

Spiridonov²,

Kazakov³

et al. 2020

Quantum Electron.

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We propose using wavelength-modulation laser absorption spectroscopy in combination with quadrature detection of scattered light for remote industrial pollution monitoring in the atmosphere with a compact lidar-based gas sensor, which can be mounted on board an unmanned aerial vehicle. The instrument can be used for detecting leaks in product pipe lines; monitoring toxic gases near landfill sites, waste incineration plants, and other hazardous man-made facilities; analysing the gas atmosphere in industrial buildings and structures; and monitoring engineering processes at a sensitivity level of tens of ppm m in gas concentration measurements at characteristic distances of tens of metres.

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Preliminary results of an aircraft system based on near-IR diode lasers for continuous measurements of the concentration of methane, carbon dioxide, water and its isotopes

Cited by 5 publications

References 10 publications

Measurement of the D/H, 18O/16O, and 17O/16O Isotope Ratios in Water by Laser Absorption Spectroscopy at 2.73 μm

Measurement of the D/H, 18O/16O, and 17O/16O Isotope Ratios in Water by Laser Absorption Spectroscopy at 2.73 μm

Analysis of the Stable Isotope Ratios (¹⁸O/¹⁶O, ¹⁷O/¹⁶O, and D/H) in Glacier Water by Laser Spectrometry

Lidar-based remote infrared gas sensor for monitoring anthropogenic pollution: a proof of concept

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Preliminary results of an aircraft system based on near-IR diode lasers for continuous measurements of the concentration of methane, carbon dioxide, water and its isotopes

Cited by 5 publications

References 10 publications

Measurement of the D/H, 18O/16O, and 17O/16O Isotope Ratios in Water by Laser Absorption Spectroscopy at 2.73 μm

Measurement of the D/H, 18O/16O, and 17O/16O Isotope Ratios in Water by Laser Absorption Spectroscopy at 2.73 μm

Analysis of the Stable Isotope Ratios (18O/16O, 17O/16O, and D/H) in Glacier Water by Laser Spectrometry

Lidar-based remote infrared gas sensor for monitoring anthropogenic pollution: a proof of concept

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Analysis of the Stable Isotope Ratios (¹⁸O/¹⁶O, ¹⁷O/¹⁶O, and D/H) in Glacier Water by Laser Spectrometry