A simple test for sulphur dioxide is to pass the gas over a piece of filter paper soaked in acidified Na2Cr2O7. The paper goes from an orange colour for the Cr6+ to a green colour for Cr3+.
How does SO2 sensor work?
The sulfur dioxide sensor module works on the electrochemical principle. It works based on the diffusion of SO2 gas into the sensor which results in the production of an electrical signal proportional to the SO2 concentration.
High concentrations of SO2 can cause inflammation and irritation of the respiratory system, especially during heavy physical activity. The resulting symptoms can include pain when taking a deep breath, coughing, throat irritation, and breathing difficulties.Sep 11, 2018
How is sulphur dioxide detected?
It can be detected with the help of potassium permanganate solution. When SO2 is passed through an acidified potassium permanganate solution, it decolonizes the solution. SO2 gives a pungent suffocating smell which indicates the presence.
How do you test for sulfur dioxide in the air?
A simple test for sulphur dioxide is to pass the gas over a piece of filter paper soaked in acidified Na2Cr2O7. The paper goes from an orange colour for the Cr6+ to a green colour for Cr3+.
How do you capture sulphur dioxide?
Coal-burning power plants, for example, release significant amounts of sulphur dioxide (along with other gases, such as carbon dioxide) in their flue gases. Currently, sulphur dioxide is captured and removed from flue gases using corrosive solutions of lime or caustic soda.Dec 10, 2009
Sulfur dioxide affects the respiratory system, particularly lung function, and can irritate the eyes. Sulfur dioxide irritates the respiratory tract and increases the risk of tract infections. It causes coughing, mucus secretion and aggravates conditions such as asthma and chronic bronchitis.Mar 27, 2017