Nitrogen Oxides

nanoplus Nanosystems and Technologies GmbH Applications Applications by Gas Nitrogen Oxides

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

Nitrogen Oxides

Major Applications

nanoplus lasers detect nitrogen oxides in numerous applications, such as emission control, breath gas analysis as well as monitoring of medical gas.

Tunable diode laser spectroscopy allows measuring 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 nitrogen oxides . 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 NO_x 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 NO_x detection below. Learn more about their specifications.

1814 nm

2270 nm

2670 nm

2860 nm

3420 nm

4524 nm

5184 nm

5255 nm

5263 nm

Factors which you should consider in your setup

Above wavelengths as well as further customized wavelengths for the detection of nitrogen oxides 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 nitrogen oxides detection based on tunable diode laser absorption spectroscopy. Refer to below literature list to read more or select your paper by application.

Applications

CO₂ & NOx

Emission control of exhaust fumes: CO₂ and NOx

Guided by environmental policies, the automobile industry is concerned to reduce the carbon footprint of vehicles. Automotive suppliers develop innovative combustion engines to control CO₂ and NO_x concentration in exhaust fumes.

[ 115 ]

NOx

Monitoring of breath gas: NOx

The field of breath analysis considers NO_X as a biomarker for asthma and other pulmonary diseases. This new technology becomes more established for clinical applications. It is a cost-effective and non-invasive method of diagnosis and treatment monitoring.

[ 116 , 49 ]

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

# 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,

# 11 Quantum cascade laser linewidth investigations for high resolution photoacoustic spectroscopy

M. Germer, M. Wolff , Appl. Opt., 48, 4, 2009, pp. B80-B86.,

# 18 Monomode Interband Cascade Lasers at 5.2 µm for Nitric Oxide Sensing

M. von Edlinger, J. Scheuermann, R. Weih, C. Zimmermann, L. Naehle, M. Fischer, J. Koeth , IEEE Phot. Tech. Lett, 26, 5, 2014, pp. 480-482.,

# 31 QCL based NO Detection

M. Wolff, J. Koeth, L. Hildebrandt, P. Fuchs; 16th International Conference on Photoacoustic and Photothermal Phenomena.,

# 49 Spectroscopic monitoring of NO traces in plants and human breath: applications and perspectives

S. M. Cristescu, D. Marchenko, J. Mandon, K. Hebelstrup, G. W. Griffith, L. A. J. Mur, F. J. M. Harren, Appl. Phys. B,, 109, 3, November 2012, pp. 203-211.,