Sulphur Dioxide and Nitrogen Dioxide

Sulphur dioxide and nitrogen dioxide are both pollutants which are not trapped very well by standard HEPA filters. This is particularly bad as they are some of the most dangerous pollutants.

 

NOx (Nitrogen Oxides, Including Nitrogen Dioxide)

NOx gases are primarily created when we burn fossil fuels. The high temperatures generated in the air by burning petroleum and other oils causes nitrogen to react with oxygen, and as a result, forms these harmful oxides. The main one we are concerned with is nitrogen dioxide.

They are associated with various long-term health effects and conditions, which put people at risk when they are exposed for a long period. NO2 has often been cited as a serious problem for sufferers with asthma, and may even cause it if you are over-exposed as a child. It is also associated with lung-tissue damage, heart disease and other increases in mortality. Many also believe it weakens the immune system, especially when exposures are regular.

Power plant emitting steam                  


SOx (Sulphur Oxides, Including Sulphur Dioxide)

Sulphur oxides include many compounds of sulphur and oxygen, but our main concern is SO2.

SO2 is often released by the burning of fossil fuels, especially coal. It is also released naturally by volcanoes, as if we needed any more reasons to be careful around volcanoes!

SO2 is a harmful pollutant to humans, and can cause many problems when they are exposed to it. It can cause breathing issues, it can damage lung tissue, it is sometimes regarded as an irritant and according to a 2011 conducted in the US, may cause preterm birth.

                  Car Exhaust




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