Table 1.
Physical characteristics of Fe2O3 particles
| Physical Characteristics | Large Particles | Small Particles |
|---|---|---|
| Geometric median diameter (μm) | 1.5 | 0.5 |
| Aerodynamic median diameter (μm) | 2.8 | 1.3 |
| Geometric Standard Deviation | 1.2 | 1.2 |
| Density (g/cm3) | 3.8 | 4.1 |
| Estimated surface area (m2/g) | 7.1 | 17 |
The monodisperse Fe2O3 particles were produced using a spinning top aerosol generator with subsequent online heat degradation of the particles in a tube furnace at 800°C. The aerodynamic characterization of the particles was continuously monitored with an aerodynamic particle sizer (Type APS33, TSI Inc.) and by low-angle forward-scattering optical aerosol spectrometry.