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PRIORITY AIR POLLUTANTS AS GLOBAL RISK FACTORS FOR PUBLIC HEALTH (ON THE EXAMPLE OF KAZAN)
Abstract
The results of our study revealed regional peculiarities, which showed an excess of the share of PM10 compared to PM2.5 in the rank distribution and high concentration of soot in the level of impact on public health. It was found that the distribution in terms of contribution to the total risk value (HQ) of the main pollutants is highest in all three zones: carbon (soot), nitrogen dioxide (NO2), suspended solids (PM), where the main share is suspended particles up to 10 microns (PM10). Among the studied zones, zone 1 is the most polluted zone in terms of the impact of atmospheric air chemicals on human health. The share contribution of chemical substances showed that the first rank of influence on the occurrence of negative effects on adolescent health is carbon (soot), which accounted for 35.9% in zone 1, in zones 2 and 3 - respectively 26% and 36.9%. nitrogen dioxide accounted for 17.9%-19.4%, the distribution of suspended particles PM10 by area ranged from 13.9%-21.8%. Comparison of the total hazard quotients of the studied population groups revealed an excess of this indicator both in adolescents and adults. They are characterised as high (HQ >3): 4.12-5.48 for adolescents, 3.0-3.91 for adults. The main critical organs exposed to the impact of pollutants in the territory of Kazan turned out to be respiratory organs, systemic impact, on teeth, impact on mortality and blood system.
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