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• It is natural occurring gas found in earth’s
atmosphere.
• It is an allotrope of an oxygen consisting of 3
atoms of oxygen ( O3).
Christian Friedrich Schonbein noticed the
pungent odour and recognized it as the smell
often following a bolt of lightning. In 1839,
he succeeded in isolating the gaseous
chemical and named it "ozone", from the
Greek word ozein meaning "to smell".
 About 90% of ozone is found in the layer of the
stratosphere located 10 – 50 km above earth
surface.
This is called the OZONE LAYER .
 It absorb most of the sun’s UV Radiation.
 The ozone layer was discovered in 1913 by the
French physicists Charles Fabry and Henri Buisson
 Ozone layer depletion,
is simply the wearing
out (reduction) of the
amount of ozone in
the stratosphere.
 Ozone depletion
describe a steady
decline of about 4%
per decade in the total
volume of ozone in
earth’s stratosphere
the ozone hole.
 Catalytic destruction is by atomic halogens. The
main source of these halogen atom is halocarbon,
refrigerants, solvent(chloroform), propellants and
foam blowing agents(HCFCs, halons(firefighting) ,
freon ).
 CFC and many other substance are referred as
ozone depleting substance.
 Chlorofluorocarbons are used in cosmetic,
pressurised blower , heat detectors.
 Carbontetrachloride are used in dry cleaning
sparys,spray adhesive , correction fluid.
It was seen in 1970’s by research group from the
British Antarctica Survey(BAS).
 The word hole is in context with ozone the ozone hole
is more correctly described as a low concentration of
ozone.
 The primary causes of ozone depletion is the presence
of chlorine – containing source gases (CFC’s and
related hydrocarbons).
Effect on human life
eye diseases ,skin it affect aquatic animals
cancer. Damage early development
of fishes, crab , shrimp.
increased UV rays affect bad effect on non
plants by reducing their living material likpaint
size. Fabric pipes.
 .

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PPT on Ozone layer depeletion

  • 1.
  • 2. • It is natural occurring gas found in earth’s atmosphere. • It is an allotrope of an oxygen consisting of 3 atoms of oxygen ( O3). Christian Friedrich Schonbein noticed the pungent odour and recognized it as the smell often following a bolt of lightning. In 1839, he succeeded in isolating the gaseous chemical and named it "ozone", from the Greek word ozein meaning "to smell".
  • 3.  About 90% of ozone is found in the layer of the stratosphere located 10 – 50 km above earth surface. This is called the OZONE LAYER .  It absorb most of the sun’s UV Radiation.  The ozone layer was discovered in 1913 by the French physicists Charles Fabry and Henri Buisson
  • 4.  Ozone layer depletion, is simply the wearing out (reduction) of the amount of ozone in the stratosphere.  Ozone depletion describe a steady decline of about 4% per decade in the total volume of ozone in earth’s stratosphere the ozone hole.
  • 5.
  • 6.  Catalytic destruction is by atomic halogens. The main source of these halogen atom is halocarbon, refrigerants, solvent(chloroform), propellants and foam blowing agents(HCFCs, halons(firefighting) , freon ).  CFC and many other substance are referred as ozone depleting substance.  Chlorofluorocarbons are used in cosmetic, pressurised blower , heat detectors.  Carbontetrachloride are used in dry cleaning sparys,spray adhesive , correction fluid.
  • 7. It was seen in 1970’s by research group from the British Antarctica Survey(BAS).  The word hole is in context with ozone the ozone hole is more correctly described as a low concentration of ozone.  The primary causes of ozone depletion is the presence of chlorine – containing source gases (CFC’s and related hydrocarbons).
  • 8. Effect on human life eye diseases ,skin it affect aquatic animals cancer. Damage early development of fishes, crab , shrimp. increased UV rays affect bad effect on non plants by reducing their living material likpaint size. Fabric pipes.