A clean air supply is essential to our own health and that of the environment. But since the industrial revolution, the quality of the air we breathe has deteriorated considerably - mainly as a result of human activities. The issue of air quality is still a major concern for every citizens. Since the early 1970s, the world has been working to improve air quality by controlling emissions of harmful substances into the atmosphere, improving fuel quality, and by integrating environmental protection requirements into the transport and energy sectors
Benefits analysis of Smart Environment
- Nitrogen dioxide (NO2): it is a gas produced by the rapid oxidation of NO, which is produced by burning fossil fuels in vehicles and industry. It is a toxic and irritating gas that affects the respiratory system and also encourages the production of nitric acid (HNO3) responsible for acid rain.
- Carbon monoxide (CO): it is produced in incomplete combustion, ie, when part of the fuel does not react completely due to a lack of oxygen. Its danger to humans and animals, once it sets in blood hemoglobin, it prevents oxygen transport, which can be lethal. Although in open space is easily diluted, the CO emission from the engines of cars in congested areas causes may have rates of 50-100ppm, which are dangerous.
- Ozone (O3): it is a natural constituent that can be found at sea level with a concentration of 0.01 mg / kg. However, with intense solar radiation and high contamination coming from vehicles, its concentration can go up to 0.1 mg / kg being dangerous. In this proportion, the plants may be affected and human may experience irritation of nasal passages and throat and dryness in the lining of the respiratory tracts.