Engineered Nanoparticles emitted from printer
Research Area: Nano-Exposure Assessment
A representative image: same chamber image from the website
Funding Agencies: NIOSH and CPSC
There is evidence associating the use of laser printers and emission of PM, ozone and VOCs. Recently, there have been concerns associated with the incorporation of nanoparticles into toner formulations to improve quality but the implications on exposures remain unknown. In this study, a realistic exposure system was developed to generate exposure atmospheres associated with 11 commonly used laser printers. The printers were placed in the chamber and their emissions monitored during a continuous print job using real time instrumentation. The printers were then ranked based on their emission profiles and the 6 highest emitters underwent further physico-chemical and morphological analysis. Furthermore, an in vitro toxicological evaluation was done to investigate the biological response of various cell lines to the collected PM. Results thus far have raised concerns that these emissions may be deleterious to lungs of those exposed to them.