Diode-laser-based ultraviolet absorption sensor for nitric oxide

Hanna, Sherif F.; Barron-Jimenez, Rodolfo; Anderson, Thomas N.; Lucht, Robert P.; Caton, Jerald A.; Walther, Thomas

doi:10.1007/s00340-002-0974-9

Cited by 28 publications

(13 citation statements)

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“…The Doppler width for the electronic resonance transitions is based on standard theory 12 and at room temperature is approximately 40 Γ da,D = 0.1 cm −1 . The total linewidth was then approximated by:…”

Section: 40mentioning

confidence: 99%

Perturbative theory and modeling of electronic-resonance-enhanced coherent anti-Stokes Raman scattering spectroscopy of nitric oxide

Kuehner

Naik

Kulatilaka

et al. 2008

The Journal of Chemical Physics

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for ERE-CARS NO spectra has been developed in the perturbative limit. Comparisons to experimental spectra are presented where either the probe laser was scanned with fixed Stokes frequency or the Stokes laser was scanned with fixed probe frequency. At atmospheric pressure and an NO concentration of 100 ppm, good agreement is found between theoretical and experimental spectral peak locations and relative intensities for both types of spectra.Factors relating to saturation in the experiments are discussed, including implications for the theoretical predictions.

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Section: 40mentioning

confidence: 99%

Perturbative theory and modeling of electronic-resonance-enhanced coherent anti-Stokes Raman scattering spectroscopy of nitric oxide

Kuehner

Naik

Kulatilaka

et al. 2008

The Journal of Chemical Physics

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“…Luminescent sensors often have long delay times and so are not suited to exhaust gas sensing where the concentrations change rapidly. A wide range of absorption based techniques exist including evanescent wave gas sensors [13][14][15][16], singlepass cell sensors [17,18] and multipass cell sensors [19][20][21]. Evanescent wave gas sensors can have sensitivity issues as the interaction between the optical light and the test gas is often very limited.…”

Section: Current Technologiesmentioning

confidence: 99%

Optical sensing of hazardous exhaust emissions using a UV based extrinsic sensor

Dooly

Fitzpatrick

Lewis

2007

Energy

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“…Currently, the optical monitoring techniques for NO and SO 2 pollution emissions mostly include nondispersive infrared (NDIR) spectroscopy [6][7][8][9][10], laser-induced fluorescence (LIF) [11,12] and tunable diode laser absorption spectroscopy (TDLAS) [13,14]. In the NDIR and LIF techniques the concentrations are obtained based on light intensity change and not by spectral analysis, thus being easily influenced by variations of light source intensity.…”

Section: Introductionmentioning

confidence: 99%

An optical system for measuring nitric oxide using spectral separation techniques

Zhang

Somesfalean

Guo³

et al. 2012

Appl. Phys. B

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An optical sensor based on differential absorption spectroscopy for real-time monitoring of industrial nitric oxide (NO) gas emission is described. The influence of gas absorption interference from sulfur dioxide (SO 2 ) in the environment was considered and a spectral separation technique was developed in order to eliminate this interference effect. The absorption spectrum of SO 2 around 226 nm was evaluated by the SO 2 concentration obtained using the experimentally recorded absorption spectrum around 300 nm. The absorption spectrum of NO around 226 nm was obtained by subtracting the absorption of SO 2 from the integral absorption spectrum of SO 2 and NO. The concentration measurements were performed at atmospheric pressure. The technique was found to have a lower detection limit of 0.8 ppm for NO per meter path length (SNR = 2) and be immune from the influence from SO 2 on the NO measurement. The sensor based on this technique was successfully employed for in situ measurement of SO 2 and NO concentrations in the flue gas emitted from an industrial coal-fired boiler.

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Diode-laser-based ultraviolet absorption sensor for nitric oxide

Cited by 28 publications

References 0 publications

Perturbative theory and modeling of electronic-resonance-enhanced coherent anti-Stokes Raman scattering spectroscopy of nitric oxide

Perturbative theory and modeling of electronic-resonance-enhanced coherent anti-Stokes Raman scattering spectroscopy of nitric oxide

Optical sensing of hazardous exhaust emissions using a UV based extrinsic sensor

An optical system for measuring nitric oxide using spectral separation techniques

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