Reliable optical measurement of water vapor in highly scattering environment

Haesung Park; Kwangchil Lee; Gumin Kang; Soonho Song; Youngjean Jung; Kyoungsik Kim; Jinsu Bae; Jonghak Lee; Hyoungkuk Park

doi:10.1016/j.saa.2008.10.022

Reliable optical measurement of water vapor in highly scattering environment

Haesung Park, Kwangchil Lee, Gumin Kang, Soonho Song, Youngjean Jung, Kyoungsik Kim, Jinsu Bae, Jonghak Lee, Hyoungkuk Park

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

Based on tunable diode laser spectroscopy with direct absorption measurement, we developed a reliable measurement scheme which can precisely detect water vapor concentration independent of the scattering (attenuation) caused by the non-water dust particles inside the observed humidity chamber. The relative water vapor concentration was measured at 2 ν₁ + ν₃ water vapor transition band by 938 nm distributed feed-back diode laser at different temperatures using the tunable diode laser spectroscopy technique. These relative water vapor concentrations are converted into the absolute water vapor concentrations and we confirmed that the experimental results at different temperatures are consistently independent of the attenuation. Our measurement system gives the consistent water vapor concentrations without regard to either high or low scattering caused by the non-water dust particles inside the observed humidity chamber.

Original language	English
Pages (from-to)	510-514
Number of pages	5
Journal	Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Volume	72
Issue number	3
DOIs	https://doi.org/10.1016/j.saa.2008.10.022
Publication status	Published - 2009 Apr

Bibliographical note

Funding Information:
We thank POSCO for the loan of equipment. This study was supported by grants of the POSCO, the National R&D Program for Cancer Control, Ministry of Health & Welfare, Republic of Korea(720170), by the Bio R & D program through the Korea Science and Engineering Foundation funded by the Ministry of Science & Technology (KOSEF 2007-8-1158), and by a Korea Research Foundation Grant provided by the Korean Government (MOEHRD, Basic Research Promotion Fund) (KRF-2007-331-C00121).

All Science Journal Classification (ASJC) codes

Analytical Chemistry
Atomic and Molecular Physics, and Optics
Instrumentation
Spectroscopy

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10.1016/j.saa.2008.10.022

Cite this

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title = "Reliable optical measurement of water vapor in highly scattering environment",

abstract = "Based on tunable diode laser spectroscopy with direct absorption measurement, we developed a reliable measurement scheme which can precisely detect water vapor concentration independent of the scattering (attenuation) caused by the non-water dust particles inside the observed humidity chamber. The relative water vapor concentration was measured at 2 ν1 + ν3 water vapor transition band by 938 nm distributed feed-back diode laser at different temperatures using the tunable diode laser spectroscopy technique. These relative water vapor concentrations are converted into the absolute water vapor concentrations and we confirmed that the experimental results at different temperatures are consistently independent of the attenuation. Our measurement system gives the consistent water vapor concentrations without regard to either high or low scattering caused by the non-water dust particles inside the observed humidity chamber.",

author = "Haesung Park and Kwangchil Lee and Gumin Kang and Soonho Song and Youngjean Jung and Kyoungsik Kim and Jinsu Bae and Jonghak Lee and Hyoungkuk Park",

note = "Funding Information: We thank POSCO for the loan of equipment. This study was supported by grants of the POSCO, the National R&D Program for Cancer Control, Ministry of Health & Welfare, Republic of Korea(720170), by the Bio R & D program through the Korea Science and Engineering Foundation funded by the Ministry of Science & Technology (KOSEF 2007-8-1158), and by a Korea Research Foundation Grant provided by the Korean Government (MOEHRD, Basic Research Promotion Fund) (KRF-2007-331-C00121). ",

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doi = "10.1016/j.saa.2008.10.022",

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AU - Park, Haesung

AU - Lee, Kwangchil

AU - Kang, Gumin

AU - Song, Soonho

AU - Jung, Youngjean

AU - Kim, Kyoungsik

AU - Bae, Jinsu

AU - Lee, Jonghak

AU - Park, Hyoungkuk

N1 - Funding Information: We thank POSCO for the loan of equipment. This study was supported by grants of the POSCO, the National R&D Program for Cancer Control, Ministry of Health & Welfare, Republic of Korea(720170), by the Bio R & D program through the Korea Science and Engineering Foundation funded by the Ministry of Science & Technology (KOSEF 2007-8-1158), and by a Korea Research Foundation Grant provided by the Korean Government (MOEHRD, Basic Research Promotion Fund) (KRF-2007-331-C00121).

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N2 - Based on tunable diode laser spectroscopy with direct absorption measurement, we developed a reliable measurement scheme which can precisely detect water vapor concentration independent of the scattering (attenuation) caused by the non-water dust particles inside the observed humidity chamber. The relative water vapor concentration was measured at 2 ν1 + ν3 water vapor transition band by 938 nm distributed feed-back diode laser at different temperatures using the tunable diode laser spectroscopy technique. These relative water vapor concentrations are converted into the absolute water vapor concentrations and we confirmed that the experimental results at different temperatures are consistently independent of the attenuation. Our measurement system gives the consistent water vapor concentrations without regard to either high or low scattering caused by the non-water dust particles inside the observed humidity chamber.

AB - Based on tunable diode laser spectroscopy with direct absorption measurement, we developed a reliable measurement scheme which can precisely detect water vapor concentration independent of the scattering (attenuation) caused by the non-water dust particles inside the observed humidity chamber. The relative water vapor concentration was measured at 2 ν1 + ν3 water vapor transition band by 938 nm distributed feed-back diode laser at different temperatures using the tunable diode laser spectroscopy technique. These relative water vapor concentrations are converted into the absolute water vapor concentrations and we confirmed that the experimental results at different temperatures are consistently independent of the attenuation. Our measurement system gives the consistent water vapor concentrations without regard to either high or low scattering caused by the non-water dust particles inside the observed humidity chamber.

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Reliable optical measurement of water vapor in highly scattering environment

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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