The ozone layer diminishes more each year. As the ara of paired ozone depletion (commonly called the ozone hole) gets larger, additional unseeable rays are allowed to pass through. These rays cause cancer, cataracts, and remove immunity to diseases.1 What causes the depletion of the ozone layer? In 1970, Crutzen first showed that nitrogen oxides produced by decaying nitrous oxide from soil-borne microbes react catalytically with ozone hastening its depletion. His findings started research on round biogeochemical cycles as well as the effects of supersonic institutionalise aircraft that release nitrogen oxide into the stratosphere.2 In 1974, Molina and Rowland found that human-made chlorofluorocarbons used for founder foam, cleaning fluids, refrigerants, and repellents transform into ozone-depleting agents.3 Chlorofluorocarbons stay in the atmosphere for some(prenominal) decades collectable to their long tropospheric lifetimes. These compounds are carried into the strato sphere where they undergo hundreds of catalytic cycles with ozone.4 They are low-spirited bug out into chlorine atoms by ultraviolet radiation.5 centilitre acts as the catalyst for breaking down atomic atomic number 8 and molecular ozone into two molecules of molecular oxygen. The sanctioned set of replys that embroil this process are: Cl + O3 -->ClO + O2 and ClO + O -->Cl + O2 The exculpate result: O3 + O -->2O2 Chlorine is ab initio removed in the first equation by the reaction with ozone to form chlorine monoxide.
Then it is regenerated through the reaction with monatomic oxygen in the second equation. The net resul t of the two reactions is the depletion of o! zone and atomic oxygen.6 Chlorofluorocarbons (CFCs), halons, and methyl radical bromide are a few of the ozone depletion substances (ODS) that break down ozone under intense ultraviolet light. The bromine and fluorine in these chemicals act as catalysts, reforming ozone (O3) molecules and monatomic oxygen into molecular oxygen (O2). In volcanic eruptions, the sulfate... If you motive to get a sound essay, order it on our website: BestEssayCheap.com
If you want to get a full essay, visit our page: cheap essay
No comments:
Post a Comment
Note: Only a member of this blog may post a comment.