Detection and characterization of nanomaterials released in low concentrations during multi-walled carbon nanotube spraying process in a cleanroom
- Detection and characterization of nanomaterials released in low concentrations during multi-walled carbon nanotube spraying process in a cleanroom
- 지준호; 우대광; 이승복; 김태성; 김덕종; 김재현; 배귀남
- carbon nanotubes; cleanroom; nanomaterials; release; spraying process
- Issue Date
- Inhalation toxicology
- VOL 25, NO 14, 759-765
- Release of nanomaterials was assessed in a cleanroom workplace designed for the handling
of multi-walled carbon nanotubes. During the process, the nanotubes were sprayed in a chamber fitted with an exhaust duct system. The front door of the spraying chamber was completely closed, but rear end of the chamber was partially open. Throughout a series of spray processes, three detectors – an optical particle counter, a nanoparticle aerosol monitor, and an aethalometer– counted and characterized particles escaping the chamber. Concentrations of particle surface area and black carbon emitted by the spraying were assessed assuming zero background aerosol concentration in the cleanroom. Very low concentrations of black carbon, 0.4 mg/m3, were observed. In conclusion, in a cleanroom, low concentrations of nanomaterials were detected to be emitted from a spraying chamber into the workplace. The level of particles reaching the workplace was sufficiently low to have made their detection difficult in a normal environment. Both target nanomaterial and non-intended incidental nanomaterials were released during spraying. Despite the use of exhaust duct system in the process chamber, workers would be
exposed to some particles if the chamber were partially open. The exhaust duct system was not enough to remove all the particles released in the chamber.
- Appears in Collections:
- KIST Publication > Article
- Files in This Item:
There are no files associated with this item.
- RIS (EndNote)
- XLS (Excel)
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.