Air Quality

Measurements of particulate matter for air quality analysis.

The Problem

Air pollution is one of the biggest health threats. An important factor for air quality is the presence of particles in air. Methods analyzing air quality are mostly focusing on the size of the particles, because it is defining how deep particles can enter the lungs.

The differentiation of the particles can also be done, but it is generally more time consuming and the used methods require a laboratory analysis. When the air quality should be monitored in multuple positions or over a long period of time, laboratory analysis can only be done on random samples, because of its high analytical expenses.

Our Solution

At NanoLockin we have developed a new method based on lockin thermography to measure particles. The particles are heated with light and the heat is analyzed.

With this basic physical principle of adsorption instead of light scattering, which is different from existing particle measuring instruments, combustion products such as soot particles can be specifically detected. Falsification of the measurement results by less critical particles such as pollen or dust is thus ruled out.

Application examples

  • Analysis of particle concentration on filters
  • Detection of particles
  • Analysis of particle-cell interactions
  • Particle types: black carbon, break wear particles, tire wear particles, particles from metal abrasion