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ozon hole

ozon hole. 1. ozon layer 2. ozon layer depletion 3. effect 4. what can we do ?. Ozone. ozone is a molecule that contains three atoms of oxygen and thus has the formula O 3. Etymology: from Greek ozon, present participle of ozein to smell. O 2 + O O 3.

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ozon hole

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  1. ozon hole

  2. 1. ozon layer • 2. ozon layer depletion • 3. effect • 4. what can we do ?

  3. Ozone ozone is a molecule that contains three atoms of oxygen and thus has the formula O3 Etymology: from Greek ozon, present participle of ozein to smell

  4. O2 + O O3 Chemistry of absorbing UV O3 O2 + O

  5. ozon layer depletion • CFCl3 + hν → CFCl2 + Cl • Dissosiation kloro fluoro karbon yields Cl • O3 + Cl → ClO+ O2 • Cl decreases ozon ODS : ozon depletion substance eq : freons (CFCs) , halons (BFCs)

  6. ozon hole • Ozon hole is area in which the ozon level has dropped as low as 33%. • It take place at stratosphere above Antarctica occur during spring

  7. 1 DU (Dobson Unit) 0,001 atm/cm

  8. effect • 1 % loss of ozone increase 2 % in UV radiation • Risk for human : skin problem (ageing and cancer), deppresion of imune system, & corneal cataracts • Lead massive die of photoplancton • Increase tropospheric (ground level) ozon • Also increase global warming

  9. What can we do • Don’t use CFCs product • Be carefull in freon using (for AC car, freezer) • Protect skin from harmfull sunrise

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