Table1. Particle Number and Particle Surface Area per 10 µgm-3 Airborne Particles. (Oberdörster G et al., 2005)
| Particle Diameter (Nm) |
Particle Number (cm-3) |
Particle Surface Area (µm2.cm-3) |
| 5 |
153,000,000 |
12,000 |
| 20 |
2,400,000 |
3,016 |
| 250 |
1,200 |
240 |
| 5,000 |
0.15 |
12 |
Source: SCENIHR 
The appropriateness of existing methodologies to assess the potential risks associated with engineered and adventitious products of nanotechnologies (2006),
3.9 Exposure Scenarios, p. 35
Related publication:
Other Figures & Tables on this publication:
Figure 1. Non-monotonic relationships of particle deposition as function of diameter in a healthy adult (Price et al, 2002)
Figure 2. Diagram of known and suspended mechanical clearance pathways for insoluble particles depositing in the pulmonary region (McCellan et al 1998)
Figure 3. Fate of nanoparticles in the environment
Figure 4. Possible relationship between particle size and toxicity
Figure 5. Toxicokinetics of nanoparticles
Figure 6. Exposure assessment algorithm
Figure 7. Algorithm of toxicodynamics of nanoparticles
Figure 8. Hazard identification
Table1. Particle Number and Particle Surface Area per 10 µgm-3 Airborne Particles. (Oberdörster G et al., 2005)
Table 2. The potential risks following occupational exposure to nanoparticles (HSE 2004)
Table 3. Comparison of nanoparticles in workplace air (Möhlmann, 2004)
