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. Author manuscript; available in PMC: 2015 Feb 5.
Published in final edited form as: Toxicol Lett. 2013 Jul 26;222(2):146–154. doi: 10.1016/j.toxlet.2013.07.012

Table 1.

Experimental exposure conditions to concentrated ambient particulates.

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
a

NM, not measured.

b

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).