Oxygen….Natural atmospheric composition
Our atmosphere has unique composition of different gases where their proportion varies from most abundant to rare or trace amounts. The major contribution is of Nitrogen which is among the top proportion of 78% and second comes to Oxygen which is around 21%. Rest of the gases are important but having lesser proportion then the major two i.e. Nitrogen and Oxygen.
S.NO Name Formula 1 Nitrogen N2 78.084 2 Oxygen O2 20.946 3 Argon Ar 0.934 4 Carbon dioxide CO2 0.041332 5 Neon Ne 0.001818 6 Helium He 0.000524 7 Methane CH4 0.000187 8 Krypton Kr 0.000114
Source of Oxygen:
Your Answer is Trees? if yes then it is not true. Oxygen on
earth came from different source and does not depend upon Plants only. Plants
is one of the sources for Oxygen which is being produced as a result of
Photosynthesis. The major proportion of atmospheric Oxygen on earth come from Ocean.
Study suggest that approx. 70% of the atmospheric Oxygen on earth come from
marine plants and plant like organisms known as planktons. Plants and Trees are
also the major source of Oxygen, Rainforest contributes approx. 28% of the
Oxygen plays a vital role in the human body, for breathing and for
various metabolic activity. The air which we breathe have abundance of
Oxygen and very much required in day to day life. However, when composition of surrounding
air is getting imbalanced by increase in other gaseous components due to additional
source or anthropogenic activity results in Pollution. This is condition where
the ambient air quality standard for healthy living is getting disturbed by increase
in other elements known as pollutants. There are various health related issues
which one can face due to polluted air.
Do we Breathe Clean air?
It depends on the
location you are living. In India the major cities are on high threat of disease
due to increasing air pollution, the condition for Delhi is more severe. Study
Suggest that Air quality is getting worsen for various cities in India such as
Delhi, Kanpur, Faridabad, Varanasi, Gaya, Patna, Lucknow, Agra, Muzaffarpur and
National Ambient Air
Central Pollution control Board under the Air
Pollution act 1981 has defined the standard for Ambient air quality for India.
Control Board is executing a nation-wide programme of ambient air quality
monitoring known as National Air Quality Monitoring Programme (NAMP). The
network consists of 779 operating stations covering 339 cities/towns in 29
states and 6 Union Territories of the country.