Availability of

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

In %

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.

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

Srinagar.

National Ambient Air

Quality Standard

Central Pollution control Board under the Air

Pollution act 1981 has defined the standard for Ambient air quality for India.

Central Pollution

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.

Reference:

https://wtamu.edu/~cbaird/sq/2013/01/05/how-do-trees-give-earth-all-its-oxygen/

https://www.ksndmc.org/Uploads/Pollution.pdf

@manaskishor2000@gmail.com