Māris kļaviņŠ, azamat azizov, JĀnis zaļoksnis environment, pollution, development: the case of uzbekistan

Table 7.5. 
Blood haemoglobin saturation with CO dependence on the CO 
concentration in the air (assuming that polluted air is inhaled for 
4 hours) 
Concentration in the air, %
0.01
0.1
1.0
The amount of haemoglobin saturated with CO, %
17
60
90
It  should  be  emphasized  that  the  toxic  effect  of  CO  is  highly 
dependent on the amount of air inhaled, respectively, the nature of 
work that a person performs. The hazard of poisoning with carbon 
monoxide is increased by the fact that it is a colourless gas, odourless 
and tasteless, which cannot be felt, but even a negligible amount 
can affect a person’s ability to act. CO content can be determined by 
its reaction with mercuric oxide, CO ability to sorb in the infrared 
region of the spectrum (this principle is widely used in automobile 
exhaust gas analysis), and gas chromatography.
 7.4. 
 Dust and aerosols in the atmosphere
Atmo spheric air can contain the particles of most diverse type, 
composition and size. Their size can vary from micron to parts of 
millimetre. Finer particles (size <10 µm ) are called aerosols, but the 

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138 
ENVIRONMENT, POLLUTION, DEVELOPMENT:  THE CASE OF UZBEKISTAN
coarser ones are named the dust. The micro drops of solutions (fog) 
also belong to the aerosols. Aerosols can be classified according to the 
source, which can be land, sea (primary aerosols) or human activities, 
as well as the chemical or mechanical formation processes of aerosols 
(secondary aerosols). The main sources of aerosol formation are 
various natural processes – the soil, entry of its constituent mineral