Table 1.
Exposure condition | MMAD (GSD) (µm)b |
Concentration ambient air (µg/m3) |
Concentration exposure chamber (µg/m3) |
Number of animals per group |
---|---|---|---|---|
Coarse | 10–2.5 | 22 | 32 | 6 |
Fine | ≤2.5 | 28 | 178 | 6 |
Ultrafine | ≤0.1 | NMa | 107 | 6 |
NM, not measured.
MMAD is the mass median aerodynamic diameter measured with the Microorifice Uniform Deposit Impactor (MOUDI). GSD is the geometric standard deviation (Kim et al., 2001a,b; Kleinman et al., 2005).