Partner: École Polytechnique Fédérale de Lausanne; Center of Studies on Air quality and Climate Change, ICEHT- FORTH
PI: Prof. Nenes Athanasios ([email protected])
Operator: Carolina Molina ([email protected])
Sulfur Dioxide (SO2) is considered a criteria air pollutant due to its adverse health and environmental impacts. For this reason, air quality standards have been established to regulate its emissions and ambient concentrations. Additionally, monitoring its concentration helps in understanding potential atmospheric reactions, as well as processes related to particle formation and acidification. The Thermo Scientific™ Model 43i-TLE Enhanced Trace Level SO2 Analyzer (MA, USA) utilizes pulsed fluorescence technology to measure sulfur dioxide in the air. In this method, SO₂ molecules absorb ultraviolet (UV) light and become excited at one wavelength, then return to a lower energy state by emitting UV light at a different wavelength. A photodetector monitors these fluctuations in emitted UV light to quantify SO₂ concentration.