Why use an NO2 sensor?

Nitrogen Dioxide gas (NO2) is a highly reactive gas formed via the oxidation of nitric oxide. Although it can be produced naturally, the majority of nitrogen dioxide found in urban areas has been caused by human activities. Nitrogen dioxide is not only a toxic gas but it is also a precursor to several harmful secondary air pollutants such as ozone and particulate matter.  It also plays a role in the formation of acid rain and photochemical smog.

Urban Nitrogen Dioxide Pollution

The major source of nitrogen dioxide gas in urban environments is the burning of fossil fuels. In urban areas this is most commonly associated with motor vehicle exhaust. Areas with high density road networks close to large populations such as in towns and cities are most at risk of over exposure. Industrial sites will also produce high concentrations of nitrogen dioxide. These include any industry that use combustion processes such as power plants, electric utilities and industrial boilers. Long term exposure of nitrogen dioxide gas can lead to respiratory problems such as asthma and bronchitis. Aeroqual offers both a fixed or portable NO2 sensor designed to measure nitrogen dioxide concentrations for human exposure studies as well as at industrial and urban locations for health and safety.

Indoor Nitrogen Dioxide

Indoor nitrogen dioxide concentrations tend to be lower when compared to outdoor levels. The main source of everyday indoor nitrogen dioxide is from unvented combustion appliances such as gas stoves and heaters. Other sources include commercial manufacturing, welding and food manufacturing which may lead to increased nitrogen dioxide concentrations in factories where people are working on a daily basis. Using an Aeroqual fixed or portable NO2 sensor for indoor and industrial use will help ensure concentrations are maintained at safe levels.