Detection and characterization of nanomaterials released in low concentrations during multi-walled carbon nanotube spraying process in a cleanroom.

摘要: AbstractRelease of nanomaterials was assessed in a cleanroom workplace designed for the handling multi-walled carbon nanotubes. During process, nanotubes were sprayed chamber fitted with an exhaust duct system. The front door spraying completely closed, but rear end partially open. Throughout series spray processes, three detectors – optical particle counter, nanoparticle aerosol monitor, and aethalometer counted characterized particles escaping chamber. Concentrations surface area black emitted by assuming zero background concentration cleanroom. Very low concentrations carbon, 0.4 μg/m3, observed. In conclusion, cleanroom, detected to be from into workplace. level reaching sufficiently have made their detection difficult normal ...