Ultrafine Particle Deposition in a Human Tracheobronchial Cast

摘要: The deposition of 0.20, 0.15, and 0.04 μm diameter particles was measured in a human central airway cast using variable larynx with cyclic inspiratory flow. Data were compared theoretical predictions for from laminar flow the first seven generations. With exception tracheal deposition, which on average exceeded by factor 9, about twice that predicted. enhanced is attributable to secondary swirling flows. Less enhancement observed at higher rates as turbulence increases. surface density deposited bifurcations approximately 20% greater than along lengths. This increased should be considered when calculating tissue dose act before initial deposit removed clearance processes.