| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
|
|
|
|
Monitoring Hydrogen Sulfide Using a Quantum Cascade Laser Based Trace Gas Sensing System |
| WANG Ling-Fang1,2**, SHARPLES Thomas-Roben2
|
1Microsystem Research Center, Chongqing University, Chongqing 400030
2Department of Chemistry, University of Oxford, Oxford, England, UK
|
|
| Cite this article: |
|
WANG Ling-Fang, SHARPLES Thomas-Roben 2011 Chin. Phys. Lett. 28 067805 |
|
|
|
|
Abstract We present the detection of hydrogen sulfide (H2S) in a quantum cascade laser (QCL) based gas sensing system employing direct laser absorption spectroscopy. The sensitivity is obtained to be 3.61×10−6 cm−1Hz−1/2 and the H2S broadening coefficient in N2 is analyzed by fitting to the plot of the Lorentzian half width at the half maximum as a function of N2 pressure is 0.1124 ±0.0031 cm−1⋅atm−1. A simulation based on data from the HITRAN database shows broad agreement with the experimentally obtained spectrum.
|
| Keywords:
78.20.Ci
82.80.Dx
07.57.Ty
|
|
|
Received: 21 February 2011
Published: 29 May 2011
|
|
| PACS: |
78.20.Ci
|
(Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))
|
| |
82.80.Dx
|
(Analytical methods involving electronic spectroscopy)
|
| |
07.57.Ty
|
(Infrared spectrometers, auxiliary equipment, and techniques)
|
|
|
|
|
|
[1] Tittel F K, Richter D and Fried A 2003 Top. Appl. Phys. 89 445
[2] Curl R F and Tittel F K 2002 Ann. Rep. Prog. Chem. C 98 219
[3] Velde S V, Steenberghe D, Van Hee P and Quirynen M 2009 J. Dental Res. 88 285
[4] Van Helden J H, Horrocks S J and Ritchie G A D 2008 Appl. Phys. Lett. 92 081506
[5] Rothman L S, Jacquemart D, Barbe A, Chris Benner D, Birk M, Brown L R, Carleer M R, Chackerian C J, Chance K, Coudert L H, Dana V, Devi V M, Flaud J M, Gamache R R, Goldman A, Hartmann J M, Jucks K W, Maki A G, Mandin J Y, Massie S T, Orphal J, Perrin A, Rinsland C P, Smith M A H, Tennyson J, Tolchenov R N, Toth R A, Vander Auwera J, Varanasi P, Wagner G and Quant J 2005 Spectrosc. Radiat. Transf. 96 139
[6] Temme N M, Frank W J, Lozier, Daniel M, Boisvert and Ronald F 2010 NIST Handbook of Mathematical Functions (Cambridge: Cambridge University)
[7] Ernst R R 1966 Sensitivity Enhancement in Magnetic Resonance, Advances in Magnetic Resonance (Orlando: Academic) vol 2 pp 1–135
[8] Duxbury G, Langford N, McCulloch M T and Wright S 2005 Chem. Soc. Rev. 34 1
[9] Kissel A, Sumpf B, Kronfeldt H D, Tikhomirov B A and Ponomarev Y N 2002 J. Mol. Spectrosc. 216 345
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
