Ammonium Detection (NH3)
Application areas of laser-based ammonium detection
nanoplus lasers for ammonium detection are used for various applications including:
- Process Optimization: Emission control
- Health: Breath gas analysis
Tunable diode laser spectroscopy allows measuring NH3 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 ammonium detection
nanoplus offers various wavelengths to target the vibrational-rotational bands of ammonium. Literature recommends the following wavelengths for ammonium detection:
Select your wavelength for ammonium detection
Above wavelengths as well as further customized wavelengths for ammonium detection are available from nanoplus.
When you choose your wavelength, you have to consider your product set up, environment and nature of the measurement.
These factors influence the optimum wavelength for your application. Do have a look at the Hitran Database to further evaluate your choice of wavelengths. Our application experts are equally happy to discuss with you the most suitable wavelength for your application.
Let us know the wavelength you require with an accuracy of 0.1 nm!
Related information for laser-based ammonia detection
Specifications & Mountings
Papers & Links
The following tables analyse the typical specifications of the standard wavelengths for NH3 detection.
|electro-optical properties of|
1512.0 nm DFB laser diode
|absorption line strength||S||cm / mol||∼ 4 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|
3000.0 nm DFB interband cascade laser
|absorption line strength||S||cm / mol||∼ 4 x 10-20|
|output power||pout||mW||> 5|
|current tuning coefficient||cT||nm / mA||0.10|
|temperature tuning coefficient||cI||nm / K||0.35|
|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.
Emission control: NOx
NH3 is added in combustion processes to reduce emissions of the flue gas NOx. The two compounds will react to uncritical N2 and H2O. To avoid any corrosive or environmental effects from overuse, the gas volume needs to be continuously monitored. [3, 72, 117, 118]
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.
#72 TDLAS-based NH3 mole fraction measurement for exhaust diagnostics during selective catalytic reduction using a fiber-coupled 2.2-µm DFB Diode laser;
F. Stritzke, O. Diemel, S. Wagner, App. Phys. B, 2015, 119, pp. 143-152.
# 107 Recent progress in laser‑based trace gas instruments:
performance and noise analysis;
J. B. McManus, M. S. Zahniser, D. D. Nelson et. al., Appl. Phys. B, 2015, 119: 203.