Pollution and Ionization

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