Table 2.
Aerosolisation conditions and exposure concentrations of the tested aerosolised engineered nanoparticles in human alveolar epithelial-like cultures.
| ATO | CeO2 | ZrO2 | ||
|---|---|---|---|---|
| Liquid suspension flow rate (mL/h) | 0.6 | 1.2 | 0.6 | |
| Aerosol flow through the insert (mL/min) | 25 | 25 | 25 | |
| Aerosol concentration (mg/m3) | 2.3 | 6.4 | 17.0 | |
| Number of particles | 4 × 105 | 1 × 105 | 1 × 105 | |
| Deposited mass | 2 h | 6 | 46 | 17 |
| 4 h | 12 | 92 | 34 | |
Aerosol mass concentration determined by gravimetry; Number of particles determined using a condensation particle counter (CPC); Deposited mass = mass concentration of aerosol/volume of aerosol passing through exposure chambers during exposure.