Smog hangs over the south of the country on Sunday evening. In some places the air quality is poor.
On Saturday at 8 p.m., the worst air quality in terms of P10 dust, which is defined as bad, was in Sucha Beskidzka. The local measurement station showed the concentration of harmful particles in the air at the level of 144 micrograms per cubic meter (µg/m3), which means 240 percent of the daily norm. Unhealthy air quality has been recorded in Krapkowice. 104 µg/m3 was measured there, i.e. 173%. daily norm.
In addition, v Krapkowice poor air quality in terms of PM2.5 dust was found. The concentration of these particles was 103 µg/m3, or 286%. daily norm. Residents breathed unhealthy air Jelenia Góra, in which 60 µg/m3 was recorded, which means 167%. daily norm.
When the air quality is good
We talk about good quality air when the concentration of harmful dust does not exceed:
- in the case of PM10 dust – 60 micrograms per cubic meter (µg/m3);
- in the case of PM2.5 dust – 36 µg/m3;
- in the case of benzene – 10 µg/m3.
What is PM10
PM10 is a mixture of particles suspended in the air with a diameter not exceeding 10 micrometers. Its occurrence is related, among other things, to the combustion processes of solid and liquid fuels.
What is PM2.5
PM2.5 is a mixture of particles suspended in the air with a diameter not exceeding 2.5 micrometers. According to the World Health Organization, it is the most harmful atmospheric pollutant to humans. It reaches not only the respiratory system, but also the circulatory system. It stays in our body much longer.
What is benzene
Benzo(a)pyrene is a carcinogenic and mutagenic chemical compound that is a representative of polycyclic aromatic hydrocarbons (PAHs). Benzo(a)pyrene has low acute toxicity and high chronic toxicity, which is related to its ability to accumulate in the body.
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