POLLUTION
the air pollution is more significant
inside than outside.
It is the unceasingly increasing presence of
atmospheric pollution visible or invisible, present in the air we breathe which deteriorates its purity.
Moreover, this deterioration can involve for concerned people (but also for the domestic animals) harmful effects immediatly or differed which can became alarming, in form of varied faintnesses, persistent disorders, sometimes severe, for sensitive individuals and serious pathologies if the pollutants are dangerous.
Whole particles, present in the air,are of any origins, liquids and solids, varied bacterial or viral germs which we inevitably breath.
Number of particles per air liter (average diameter 0,5µm)
|
Where
|
Minimum(number / liter)
|
(number/ liter)
|
|
Clean rooms
(micro-electronic...)
|
10
|
400
|
|
Automobile
cabin of painting
|
1000
|
2000
|
|
Countryside
|
2000
|
10
000
|
|
Small
city
|
10
000
|
20
000
|
|
Office
without smokers
|
11
000
|
40
000
|
|
Apartments
|
20
000
|
200
000
|
|
Office
with smokers
|
30
000
|
200
000
|
|
Workshops
|
50
000
|
200
000
|
|
active
urban Center
|
100
000
|
300
000
|
|
Factory site
|
200
000
|
600
000
|
A polluted air carry in large majority big positive ions. A healthy air, contrary, is made of a large majority of negative ions.
Number of negative ions per Cm3 in the air.
|
Place
|
Numbers
|
|
Near waterfall
|
50 000
|
|
In mountain
|
8 000
|
|
At the seaside
|
4 000
|
|
In forest
|
3 000
|
|
Countryside
|
1 200
|
|
downtown
|
200
|
|
In an office
|
20
|
|
In cars
|
14
|
Threshold of balance for a good health
1 500 negative ions / Cm3
Ozone 
Ionization