When setting off firecrackers, a large amount of harmful gases will be released, such as sulfur dioxide (SO2), nitrogen dioxide (NO2), hydrogen sulfide (H2S), carbon monoxide (CO), etc. After sulfur dioxide enters the atmosphere, it first reacts with water to form sulfurous acid (H2SO3): SO2+H2O=H2SO3
Sulfurous acid is oxidized in the air to sulfuric acid: 2H2SO3+O2=2H2SO4. Acid rain is formed in the clouds (acid rain is called the "airborne death"), which can strongly corrode buildings and industrial equipment.
Acid rain can cause the death of trees and forests, the disappearance of fish and shrimp in lakes, the destruction of soil nutrients, and the reduction or death of crops. Nitrogen dioxide can irritate people's eyes, nose, throat and lungs; it can also form urban photochemical smog, affecting visibility; it can also form small droplets of nitric acid and produce acid rain.
1. Cause air pollution. When setting off fireworks and firecrackers, a large amount of harmful gases such as sulfur dioxide, nitrogen dioxide, carbon dioxide, carbon monoxide and various metal oxide dusts will be produced. Among them, sulfur dioxide and nitrogen dioxide are extremely irritating and corrosive acid oxides.
Especially when burning in large quantities, if there is no wind or low air pressure, and the harmful gases cannot disperse for a while, it will strongly stimulate the human respiratory tract, make people cough, and cause respiratory diseases such as bronchitis. .
2. Cause noise pollution. Setting off fireworks and firecrackers will bring great noise, which has a great impact on our physiology and psychology. It will not only damage our hearing, but also damage the human cardiovascular system.
For example, the loud noise produced by setting off fireworks and firecrackers can make it difficult for the elderly to sleep peacefully, the patients to be frightened, and the students to be unable to study and rest calmly. Many times, the sudden loud noise made when setting off scares pedestrians. For people with heart disease, this kind of shock is likely to lead to more serious consequences.
3. Cause fire or other accidents. Setting off fireworks can easily cause fires or accidentally blow up people. Especially in urban areas, where buildings are getting taller and the population is relatively dense, setting off high-altitude fireworks is more likely to cause fires or casualties, directly endangering people's lives and property. Safety.
4. It causes a waste of resources. When setting off fireworks and firecrackers, it means setting off precious resources such as paper (trees) and chemical raw materials (including the pollution caused during the production of these raw materials), leaving the streets and alleys covered with traces of waste. Irresponsible habits.