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Laser Spectroscopy Sensor for Measurements of Trace Gaseous Sulfur Dioxide (SO2)

Matta, Anand
http://rave.ohiolink.edu/etdc/view?acc_num=ysu1229541167

Abstract Details

2008, Master of Science in Chemistry, Youngstown State University, Department of Chemistry.
Laser Induced Fluorescence (LIF) using non tunable laser sources is a method which has been studied for the measurement of atmospheric sulfur dioxide (SO2). As this approach is direct, there is no need of sample collection or sample concentration and the air sample can be used directly for analysis. In the approach used in these studies, a Nd:YAG laser operating at 266 nm, which is the fourth harmonic of this non-tunable laser, is used as an excitation source. Other wavelengths of excitation at 199 nm, 217 nm and 223 nm can also be used and are produced by Stimulated Raman Scattering (SRS) of 266 nm and 355 nm radiation in compressed hydrogen gas. Studies of the analytical capability of these LIF approaches have been performed at different laser wavelengths. Studies of the fluorescence spectrum signal power dependence, linearity and sensitivity have been performed. The best results have been obtained using excitation at 223 nm resulting in a limit of detection of 0.01 ppm. With further development, it is expected that the LIF approach may be able to perform fast, sensitive measurements of SO2 in the open environment while avoiding many of the interferences that occur in the conventional methods for SO2 measurements.
Josef B. Simeonsson, PhD (Advisor)
Daryl W. Mincey, PhD (Committee Member)
Peter Norris, PhD (Committee Member)
55 p.
Analytical Chemistry; Chemistry; Environmental Science; Gases
Laser spectroscopy; sulfur dioxide; stimulated raman scattering

Recommended Citations

Citations

  • Matta, A. (2008). Laser Spectroscopy Sensor for Measurements of Trace Gaseous Sulfur Dioxide (SO2) [Master's thesis, Youngstown State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1229541167

    APA Style (7th edition)

  • Matta, Anand. Laser Spectroscopy Sensor for Measurements of Trace Gaseous Sulfur Dioxide (SO2). 2008. Youngstown State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ysu1229541167.

    MLA Style (8th edition)

  • Matta, Anand. "Laser Spectroscopy Sensor for Measurements of Trace Gaseous Sulfur Dioxide (SO2)." Master's thesis, Youngstown State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1229541167

    Chicago Manual of Style (17th edition)

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© 2008, all rights reserved.
This open access ETD is published by Youngstown State University and OhioLINK.