NO24

NO24 refers to Nitrogen Dioxide, a chemical compound with the formula NO2. It is a reddish-brown gas at room temperature and pressure, with a sharp, acrid odor. Nitrogen dioxide is a significant air pollutant and a key component of smog.

It is formed naturally through lightning strikes and biological processes. However, the majority of atmospheric NO2 is produced by human activities, primarily from the combustion of fossil fuels in vehicles, power plants, and industrial processes. It is also a byproduct of the manufacture of nitric acid.

NO2 plays a crucial role in atmospheric chemistry. It contributes to the formation of ozone in the troposphere, which is harmful to human health and vegetation. Furthermore, NO2 can react with water in the atmosphere to form nitric acid, a component of acid rain. Exposure to high concentrations of NO2 can cause respiratory problems, including inflammation of the airways, reduced lung function, and increased susceptibility to respiratory infections.

Environmental regulations worldwide aim to limit NO2 emissions due to its detrimental effects on air quality and public health. Monitoring NO2 levels is an important aspect of air quality management.