Air Quality Monitoring


Globally more than 1 billion urban residents suffer from poor air quality. One of the most serious pollutants is particulates in the air. 

Usually most serious air quality problems are associated with megacities in Asia and America. However, even in Europe, 20% of population live in zone where air quality is below health standards for particulate matter (PM) exposure.

Poor outdoor air quality naturally reflects to the indoor air quality. Furthermore, there is a serious concern for employee safety in work places where nanomaterials are produced or born as a part of the industrial process.

PM2.5 and PN2.5 Air Quality monitoring

Particles with diameter of less than 2.5µm are called fine particles. Most of the particles in urban air are ultrafine particles (below 100 nm in diameter). They are the most toxic particles and most difficult to capture by air filtration devices. Furthermore, they cannot be detected through conventional optical methods.

Monitoring the number & mass concentration of such particles provides the most relevant indication of particle-related indoor air quality and particle removal efficiency.

Based on latest research, there is no threshold limit for fine particle concentration, exposure and related negative health effects. The better the air quality is, the better it is for health. And vice versa. Monitoring air quality is especially important in areas and environments, where particle pollution levels are high.

New monitoring technologies urgently needed

With Pegasor sensor technology air quality monitoring can be achieved in real time from multiple sources. PM sensor networks provide valuable air quality information e.g. in the following environments:

  • Urban air quality
  • Indoor air quality
  • Occupational hygiene monitoring