Hydrogen Sulfide Detection (H2S)
Importance of laser-based hydrogen sulfide detection
nanoplus lasers for hydrogen detection are used for:
- Process Optimization: Corrosion surveillance
- Safety: Emission control
Tunable diode laser spectroscopy allows measuring H2S with up to ppb precision in real time and in situ. Providing long-term stability and requiring little maintenance, nanoplus lasers are suitable for operation in harsh environments.
Standard wavelengths for hydrogen sulfide detection
nanoplus offers various wavelengths to target the vibrational-rotational bands of hydrogen sulfide. Different customers use different wavelengths. Literature recommends the following wavelengths for hydrogen sulfide detection:
Select your wavelength for hydrogen sulfide detection
Above wavelengths are commonly used to detect hydrogen sulfide. When you choose your wavelength, you have to consider product set up, environment and nature of the measurement. These factors decide if the selected wavelength is a good match. Let us know the wavelength you require with an accuracy of 0.1 nm!
Do have a look at the HITRAN database to evaluate further wavelengths.
Related information for laser-based hydrogen sulfide detection
Specifications & Mountings
Papers & Links
The following tables analyse the typical specifications of the standard wavelengths for H2S detection.
|electro-optical properties of|
1590.0 nm DFB laser diode
|absorption line strength||S||cm / mol||∼ 1 x 10-22|
|current tuning coefficient||cT||nm / mA||0.008||0.015||0.02|
|temperature tuning coefficient||cI||nm / K||0.07||0.1||0.14|
|mode hop free tuning range||Δλ||nm||+/- 0.5||+/- 0.7||+/- 1|
|electro-optical properties of|
2640.0 nm DFB laser diode
|absorption line strength||S||cm / mol||∼ 3 x 10-21|
|current tuning coefficient||cT||nm / mA||0.01||0.02||0.05|
|temperature tuning coefficient||cI||nm / K||0.15||0.2||0.28|
|mode hop free tuning range||Δλ||nm||+/- 0.5|
|mounting options /|
|wavelength||TEC||cap with window||AR cap with AR window||fiber||heatsink||collimation|
|TO5.6||760 nm - 3000 nm||NA||✔||NA||NA||NA||NA|
|TO5||760 nm - 3000 nm||✔||NA||✔||NA||✔||✔|
|TO66||3000 nm - 6000 nm||✔||NA||✔||NA||✔||✔|
|c-mount||760 nm - 3000 nm||NA||NA||NA||NA||NA||NA|
|SM-BTF||760 nm - 2360 nm||✔||NA||NA||single mode||NA||NA|
|PM-BTF||1064 nm - 2050 nm||✔||NA||NA||polarization maintaining||NA||NA|
Please find below a number of application samples.
Control of hazardous gases:
H2S occurs as a corrosive, toxic and explosive side product in the petrochemical industry. Continuous monitoring of this hazardous compound is critical to avoid corrosion of natural gas pipelines and ensure workers safety. Real-time analysis is essential to guarantee that burning fuels are H2S clean in order to prevent acid rains. [3, 69, 76]
Please find below a selection of related papers from our literature list.
Let us know if you published a paper with our lasers. We will be happy to include it in our literature list.
#3 Gas monitoring in the process industry using diode laser spectroscopy;
I. Linnerud, P.Kaspersen, T. Jaeger, Appl. Phys. B 67, 1998, pp. 297-305.
#9 DFB Lasers Between 760 nm and 16 µm for Sensing Applications;
W. Zeller, L. Naehle, P. Fuchs, F. Gerschuetz, L. Hildebrandt, J. Koeth, Sensors 2010, 10, pp. 2492-2510.
#69 A quartz-enhanced photoacoustic sensor for H2S trace-gas detection at 2.6µm;
S. Viciani, M. Siciliani de Cumis, S. Borri, P. Patimisco, A. Sampaolo, G. Scamarcio, P. De Natale, F. D'Amato, V. Spagnolo, App. Phys. B, 2015, 119, pp. 21-27.
#76 Diode laser-based trace detection of hydrogen-sulfide at 2646.3 nm and hydrocarbon spectral interference effects;
R. Sharma, C. Mitra, V. Tilak, Opt. Eng. 55(3), 037106, Mar 14, 2016.