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. Author manuscript; available in PMC: 2019 Mar 8.
Published in final edited form as: Nanotoxicology. 2018 May 11;12(6):539–553. doi: 10.1080/17435390.2018.1465140

Table 1.

Parameters for in vivo and in vitro aerosol exposures.

Group Exposure
Length		 Mass
conc.
(μg/m3)		 Number conc.
(#/cm3)		 CMD
(nm)		 GS
D		 Estimated
Dose
(ng/cm2)		 Estimated
Dose
(#/μm2)
In vivo 3hours/day for 4 days 670 ± 49 4.6 ± 0.7 X 107 14.1 ± 2.3 1.58 4.9 3.3
In vitro Low 7 min 37.4* 1.2 ± 0.3 X 106 16.5 ± 1.1 1.33 1.5 0.4
Medium 20 min 37.4* 1.0 ± 0.3 X 106 16.0 ± 0.9 1.36 4.4 1.3
High 60 min 37.4* 1.1 ± 0.1 X 106 15.8 ± 0.2 1.36 13.2 3.8
*

The mass concentration is an average for all the in vitro exposures. (CMD; Count Median Diameter, GSD; Geometric Standard Deviation)