Nitrogen Oxides Including Nitrogen Mono

Different pollutants released from the vehicles would cause different impacts to the human body. The first one is Nitrogen oxides (NOx). When the fuels are burning at a very high temperature combined with the electric sparks in the vehicles causing the nitrogen and oxygen in the atmosphere combined together but then the formation of nitrogen oxide will react with the oxygen to form nitrogen dioxide(NO2) rapidly. If people inhaled a low level of NO2, the gas will irritate your eyes, nose, throat, and lungs, possibly causing you to cough, tiredness, and nausea since NO2 is an acidic gas. Also, low level of nitrogen dioxide may trigger asthma and causing the formation of fluid inside the lung 1 or 2 days after inhaled. If people inhaled a high level of NO2, the gas will cause spasms, rapid burning, the tissues in the throat and upper respiratory tract swollen, the fluid also form in the lungs and the oxygenation of the body cell reduced, even may lead to die. Second one is the carbon monoxide (CO), it produced by the incomplete combustion of the vehicle gas. It is a “silent-killer” since CO is colorless and odorless and 0.5% of CO in air is sufficient to kill a person. If people inhaled very low concentration of CO, people will feel dizziness and headache. If people inhaled high concentration of CO, people will feel angina, impaired vision and also will reduce the brain function. Since human blood contains haemoglobin to take oxygen to form oxyhaemoglobin to provide oxygen to all body cells. However, haemoglobin combined with the CO more stronger than with oxygen. The carboxyhaemoglobin no longer to carry enough oxygen to various parts of the body, people will die of lack of oxygen. The third one is the sulphur dioxide (SO2), it is also a acidic gas with a choking smell similar with nitrogen dioxide. If the people inhaled low level of SO2, The SO2 will irritate the skin and mucus membranes of the eyes, nose, throat, and lungs. If the people inhaled high