2012年6月1日金曜日

The car is running source of air pollution


The car is running source of air pollution (nitrogen oxides, benzene)

In automotive exhaust gas, nitrogen oxide,
Carbon monoxide, hydrocarbons, and particulate matter
It contains a variety of air pollutants.
Oxides of nitrogen occurs in the engine burning the nitrogen in the air.
Nitrogen is fireproof material,
When fuel is burned in an explosion of the engine,
Will burn together.
Nitrogen oxides, hydrocarbons contained in the exhaust gas with still
Can cause photochemical smog.


In addition, nitrogen oxide dissolves in water and acid will be referred to as nitrite,
Can cause acid rain, acid fog.
In the engine to burn fuel very quickly,
Nitrogen does not burn not only burns,
Originally supposed to burn fuel,
I am getting in the exhaust gas without burning hydrocarbon that is.
It becomes a problem especially in the hydrocarbon to gasoline
Benzene is contained slightly.
Since the benzene molecule is close to the size of the components of gasoline,
In the gasoline when gasoline from crude oil to separate
I have an easy-go nature.
For weaving are included in the gasoline, such as when refueling in addition to exhaust gas
May pollute the atmosphere by evaporation from the fuel tank.
Therefore, the gasoline to evaporate into the atmosphere from the fuel tank
Give them such absorbing device for not leak, the gasoline benzene itself
Measures such as making things that do not contain as much as possible has been made.



It has been delayed in most measures of automobile waste gases is particulate matter.
There is a diesel engine that the car is black with smoke,
In this black smoke particulate matter, soot is possible when the fuel is burned in the engine.
To this is in addition to carbon soot, was produced in high temperature in the engine
Includes chemicals, among them strong and carcinogenic
There are also many poisonous ones.
You can also become the cause of allergic diseases such as hay fever and asthma,
There is also a research report that may worsen the symptoms.
In addition to the exhaust gas and fuel, automobile air pollutants can occur.
Asbestos is a generic term for the shape of the fibrous mineral was fine,
Has been used in many fields as a material with excellent thermal insulation and fire resistance.


Now, however, can cause malignant tumors in the skin called
Was found for the replacement of replacement is underway.
In automotive brake parts have been used to taking advantage of the wear resistance.
But little by little each time the car brakes,
Asbestos is released into the atmosphere will be in powder, pollute the environment.
Replacement of asbestos has been developed for each application in the field, respectively, in the car
The new car was produced after 1995 do not use asbestos
Brake is used.
However, many of the old cars are still using asbestos.
In addition, the future will be replacements, but asbestos is released into the atmosphere,
We do not know whether to completely these are harmless.
Air pollution caused by asbestos problem is it did not end.

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