ozone layer depletion

☆ the ozone layer?

The ozone layer is located at 20 ~ 30km above ground, 3mm only slightly (1 atm). However, the ozone layer of 3mm only absorbs most of the harmful ultraviolet rays that are included in the sunlight of the sun all things above ground.

☆ cause of ozone depletion is?

Important ozone layer has been destroyed, such as by freon gas. It looks like this: If you are briefly indicated the mechanism. On the ground, it reaches the stratosphere and freon gas is released into the atmosphere, without being degraded almost troposphere. The stratosphere is decomposed and freon gas absorbs the ultraviolet rays and release chlorine atoms. And, chlorine atom is the causative agent decompose ozone. And, of this decomposition reaction becomes a chain reaction, it is said ozone molecules tens of thousands and is degraded by one chlorine atom.

☆ What happens ozone layer is destroyed?

By ozone layer is destroyed, it becomes susceptible to viral diseases, cataract blindness and skin cancer, by the immune decreases in hits directly to the harmful ultraviolet rays. In addition, there are also affects the genes of biological cells. Now, people across the cataracts and skin cancer in the world will increase, I have increased sevenfold in Japan. In the global warming, ozone layer destruction, is that it's one of the major environmental issues.

☆ CFCs cause depletion of the ozone layer!

The was also a causative agent of global warming, there is also several thousand times that of carbon dioxide greenhouse effect, freon gas is the material that is used for cooling in the world. For this purpose, it is used for a variety of cooling and air conditioning of the car, refrigerator and air conditioning, the house. However, CFCs are substances that destroy the ozone layer. Thus, when disposing of those that were used at that time, freon gas will come out into the air more. Because it is heavier than air, chlorofluorocarbon, will approach to the ozone layer slowly. It is said to reach the ozone layer, 20 years later. At present, freon gas itself is prohibited, and makes use of the CFC substitutes that can be used as an alternative. However, this alternative Freon gas is relatively weak impact on the ozone layer destruction in comparison with CFCs. That as a result, that are using freon gas does not change.

☆ with Flon recovered?

Currently, production of CFCs has been discontinued in the developed countries. However, freon gas has also been observed today were produced before 1995 than that this arrangement is made, such as refrigerators and air conditioners. Production of home appliances that use Freon died 10 years ago, but there are many homes that are still using the appliances that you have purchased previously than in 1995. In addition, CFC has gone out from the consumer electronics that were discarded illegally. It is not possible easily in order to be able to recover the Freon, and discard the consumer electronics you are using now. However, it is possible to get to properly take back appliances Freon is used when you buy a new new, or electronics stores. Currently, there are Home Appliance Recycling Law with respect to consumer electronics.