POLLUTANTS voc
OXIDES SULFUR
Sulfur oxides include Sulfur Dioxide (SO2) and Sulfur Trioxide (SO3) which, by reacting with water, generate Sulfuric acid.
In indoor environments, in the absence of internal sources, the presence of Sulfur oxides is generally due to the entry of external air.
The main indoor sources are kerosene radiators, gas stoves, radiators without an external exhaust and tobacco smoke.
Health effects
These substances produce the same biological and health effects as Nitrogen oxides. At low concentrations the effects of Sulfur Dioxide mainly concern respiratory tract diseases, such as bronchitis, asthma and tracheitis, irritation of the skin, eyes and mucous membranes.
WARNING!
Ventilating the premises without eliminating the emission sources is of no use. Because once the frequency of ventilation is reduced, the problem recurs.
A big source of pollution is also the garage: if connected directly to the house it can convey the exhaust gases from the vehicles.
Health effects
These substances produce the same biological and health effects as Nitrogen oxides. At low concentrations the effects of Sulfur Dioxide mainly concern respiratory tract diseases, such as bronchitis, asthma and tracheitis, irritation of the skin, eyes and mucous membranes.
WARNING!
Ventilating the premises without eliminating the emission sources is of no use. Because once the frequency of ventilation is reduced, the problem recurs.
A big source of pollution is also the garage: if connected directly to the house it can convey the exhaust gases from the vehicles.
Additional informations
Particular attention must be paid when using fuels in confined spaces, taking care to provide adequate ventilation of rooms and an efficient fume extraction.
The current Italian air quality guide values for SO2 set as an average for 24 hours 100-150 µg SO2 / m3 (35-58 ppb) and 40-60 µg / m3 (15-23 ppb) as an average for 24-hour average concentrations detected over a year (April-March period). The limits defined by DM 12/11/92 and 11/25/94 indicate a level of attention equal to 125 µg SO2 / m3 (48 ppb) and an alarm level of 250 µg / m3 (96 ppb) for a detection of 24 hours.
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