Nanoparticle inhalation augments particle-dependent systemic microvascular dysfunction

Table 1 TiO₂ aerosol profiles and group depositions.

*Particle Type*	*Aerosol Concentration (mg/m* ³ )	*Exposure Time (min)*	*Calculated Deposition (μg)*	*Actual Deposition (μg)*
Sham Control	0	240	0	0
Ultrafine	10	720	150	37.60 ± 1.90
Ultrafine	12	240	60	19.17 ± 0.36
Ultrafine	6	240	30	9.48 ± 0.32
Ultrafine	3	240	15	6.38 ± 0.13
Ultrafine	1.5	240	7	3.70 ± 0.08
Fine	15	480	150	89.80 ± 6.92
Fine	16	300	100	66.50 ± 3.82
Fine	12	240	60	36.33 ± 0.69
Fine	6	240	30	19.67 ± 1.07
Fine	3	240	15	8.26 ± 0.29

NOTE: Analysis of the filter samples collected from the exposure chamber do not indicate any detectable quantity of copper or tin (two major components of bronze beads used in the fluidized-bed generator). This indicates that the exposure environment does not have detectable levels of contaminants from the bronze beads used to disperse the bulk TiO₂ samples.

ISSN: 1743-8977