Sulfur Dioxide

nanoplus Nanosystems and Technologies GmbH Applications Applications by Gas Sulfur Dioxide

DETECT SO₂ IN REAL TIME & IN SITU WITH UP TO PPB PRECISION

Sulfur Dioxide

Major Applications

nanoplus lasers detect sulfur dioxide detection in numerous applications, such as in emission control.

Tunable diode laser spectroscopy allows measuring SO₂with 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 sulfur dioxide . 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 SO₂ 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 SO₂ detection below. Learn more about their specifications.

1560 nm

1570 nm

1580 nm

1590 nm

2460 nm

4020 nm

Factors which you should consider in your setup

Above wavelengths as well as further customized wavelengths for sulfur dioxide 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 water vapour detection based on tunable diode laser absorption spectroscopy. Refer to below literature list to read more or select your paper by application.

Applications

SO₂

Emission control of flue gases: SO₂

SO₂ causes acid rain when it reacts with nitrogen oxide. It is generated during fuel combustion at power plants and other industrial facilities. For this reason SO₂ emissions are restricted and need to be monitored.

[ 178 , 67 ]

SO₂

Control of toxic substances: SO₂

SO₂ is a highly reactive and toxic gas which leads to severe respiratory disorders, hence its emissions have to be controlled.

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,

# 67 New Opportunities in Mid-Infrared Emission Control

P. Geiser, Sensors, 2015, pp. 22724-22736.,

# 75 Interband cascade laser sources in the mid-infrared for green photonics

J. Koeth, M. von Edlinger, J. Scheuermann, S. Becker, L. Nähle, M. Fischer, R. Weih, M. Kamp, S. Höfling, , Novel In-Plane Semiconductor Lasers , XV, 9767, 10th March 2016, 976712,

# 87 Optical‑feedback cavity‑enhanced absorption spectroscopy with an interband cascade laser: application to SO₂ trace analysis