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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.
This portable device, developed by the INERIS (“Institut national de l’environnementindustriel et des risques”), allows to characterize micro and nanoparticles in air (from 1 nm to 1 µm). The particles are collected on a drilled grid, which plays the role offilter, with a high collection efficiency (about 18 % for the 30 nm particles). This gridcan be directly used by TEM (“Transmission electron microscopy”).
MPS (INERIS, Ecomesure).