Tropospheric ozone (O3)

Tropospheric ozone (O3) or ground-level ozone is a gas found in the lowest layer of the Earth’s atmosphere, the troposphere, which extends up to 10 kilometres. Also known as surface or ambient ozone, it becomes a harmful air pollutant when it comes into contact...

Nitrogen dioxide (NO2)

Nitrogen dioxide (NO2) is a harmful gas whose presence in the atmosphere is mainly due to the use of fossil fuels in combustion vehicles and industrial activities. This chemical compound, formed by the combination of nitrogen and oxygen, can have serious consequences...

Fenceline monitoring

Fenceline monitoring is the continuous measurement of air quality along the boundary of an industrial facility using environmental monitoring technologies such as sensor networks, passive samplers and optical measurement systems. In the context of industrial fenceline...

Air quality sensor

Measuring air quality is essential for improving human and environmental health. Changes in the natural composition of the air we breathe are common in industrialised societies, where most of the world’s population lives. Action to eliminate or at least minimise...

Atmospheric immissions

An atmospheric immission is the concentration of a pollutant detected in the atmosphere whose presence modifies the natural composition of the air. Its origin is linked to substances generated by anthropogenic activities that, in the form of gas, smoke, dust or other...