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Detection in the Air

What are the available instrumentations to measure in the air?

To measure nanoparticles in the air, two types of instrumentation exist: the specific instruments which analyze some particles or the totality. Among those, it needs to be distinguished counters and granulometers, transportable (monitors, samplers) or portable. The counters provide a global number of particles and the granulometers specify the size distribution. A global count of the particles will be less precise and will not permit the detection of small leaks. Measures may perform in real or deferred time.

What can we expect from these instrumentations?

221_instrumentationsCondensation Nucleus Counter (CNC) - Scanning Particle Mobility Sizer (SPMS).

In the laboratory (controlled experimental conditions), measuring the concentrations of nanoparticles is possible: different instrumentations, however, provide significantly different results (up 100%) because of calibrations.

Still to be developed is a robust panel of field instruments, low-cost and easy to implement/maintain: fixed or mobile sensors, individual badges for instantaneous measures and/or integrated measures. These developments are to be done to measure the particles in the air, but also in a liquid and solid medium.