Ammonium

nanoplus Nanosystems and Technologies GmbH Applications Applications by Gas Ammonium

DETECT NH₃ IN REAL TIME & IN SITU WITH UP TO PPB PRECISION

Ammonium

Major Applications

nanoplus lasers detect ammonium in numerous applications, such as emission control as well as 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.

WHICH ABSORPTION LINE IS THE PERFECT ONE FOR YOUR APPLICATION?

Typical Wavelengths

Select your target wavelength

nanoplus offers various wavelengths to target the vibrational-rotational bands of ammonium. Select the target wavelength that fits your application best.

The literature recommends several options. They are illustrated in the graphic on the right, which shows the relative intensities of the possible absorption lines. To define the most suitable NH₃ wavelength for your application, you may have a look at our literature recommendations below or refer to the HITRAN database from the Smithsonian Institute.

We present the most common Distributed Feedback lasers for NH₃ detection below. Learn more about their specifications.

1512 nm

3000 nm

Factors which you should consider in your setup

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!

Applications & Papers

We compiled several papers on ammonium detection based on tunable diode laser absorption spectroscopy. Refer to below literature list to read more or select your paper by application.

Applications

NH₃

Monitoring of breath gas: NH₃

Ammonium is used as a biomarker for helicobacter pylori infections. These infections are responsible for stomach ulcers. Breath analysis diagnoses the disease in a non-invasive way sparing patients a disagreeable gastroscopy.

[ 63 ]

NOx

Emission control: NOx

NH₃ is added in combustion processes to reduce emissions of the flue gas NO_x. 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.

[ 178 , 117 , 116 , 72 , 3 ]

Papers & Links

# 178 Quartz-Enhanced Photoacoustic Sensors for Detection of Eight Air Pollutants

R. De Palo, A. Elefante, G. Biagi, F. Paciolla, R. Weih, V. Villada, A. Zifarelli, M. Giglio, A. Sampaolo, V. Spagnolo, P. Patimisco, Adv. Phot. Res., Vo. 4, Iss. 6, 2023,

# 106 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.,

# 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, 119, 2015, pp. 143-152.,

# 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, 10, 2010, pp. 2492-2510,

# 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,