Nitrogen dioxide (NO2) is formed by a reaction between NO — a primary air pollutant produced during fossil fuel combustion from both stationary and mobile vehicles — and ozone. The Acoem Serinus® 60, Serinus® 40 and Serinus® 40H gas analysers have been designed to provide accurate measurements for NO2, NO and NOx. All three instrument models integrate seamlessly into Acoem Air Quality Monitoring System (AQMS) networks.
Why measuring NO2 pollution is important
Short and long-term exposure to NO2 has been linked to significant adverse health impacts on the human respiratory system. In urban areas, high NO2 concentrations can lead to photochemical “smog” formation and decrease visibility due to secondary aerosol formation.
NO2 plays an important role in radical production and destruction in the tropospheric ozone production cycle. Peroxyacetyl nitrate (PAN), multifunctional organic nitrates (RONO2), nitric acid (HNO3) and particulate nitrate (pNO3) form as a result and can adversely affect acid sensitive ecosystems.
Nitrogen dioxide (NO2) is regulated as a criteria pollutant defined by the National Ambient Air Quality Standards (NAAQS) under the US EPA’s Clean Air Act.