Table 2.

Deposit rate of particles inhaled during normal respiration obtained through digital simulation (18 L/min).

Deposition rate (%)	1 nm	10 nm	100 nm	1 μm	15 μm	100 μm
Nasal Fossa	49,8	8,1	6,9	3	23,2	100
Pharynx/larynx	11,6	4,9	4,7	1,1	1,4	0
Trachea	27,5	6,1	2,4	1,9	10,8	0
Lungs				94	61,6	0

Only 14% of 100 nm particles are stopped in the respiratory tree after inspiration [29], [42].