Egypt | The Meteorological Authority issues an urgent statement revealing the fact that toxic nitrogen oxide is spreading in the air

Weather of Arabia - The Meteorological Authority in Egypt issued an urgent statement, to respond to news of the presence of toxic gas in the air, after social media activists circulated the presence of nitrogen dioxide (NO2) and air pollution in the atmosphere in Egypt.

The authority confirmed that nitrogen dioxide is one of the many nitrogen oxides, which is a gas in the normal state, brown-red in color with a sharp pungent odor, and it is one of the most important and most common air pollutants, and causes poisoning when inhaled , and the World Health Organization has developed a global recommendation to limit exposure to it. , by specifying a value of less than 20 ppb for chronic (time average) exposure, and a value of less than 100 ppb (for one hour) for acute exposure.

Traffic emissions are the main source of nitrogen oxides, while some small concentrations are produced from power plants and some other industrial sources. However, emissions from power plants and industrial areas are in most cases higher than monitoring stations, and their rise helps in the rapid spread of pollutants in the atmosphere. Therefore, emissions are considered Traffic is the main source.

The Meteorological Authority reassured citizens that according to the numerical models issued by the Meteorological Authority, the values did not exceed the permissible limit today or in the coming days.

According to the measurement, the stations of the General Meteorological Authority did not exceed the permissible relative records, as the maximum recorded percentage reached 50 parts per billion.