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Table 4 Estimated depostion rates of ZnO in the current study

From: Concentration-dependent systemic response after inhalation of nano-sized zinc oxide particles in human volunteers

Particle concentration Median particle diameter ZnO deposition rate ZnO deposition rate
[mg/m3] [nm] (sum of tracheobronchial, (alveolar)
   inhalable and alveolar)  
0.5 47.8 78% 48%
1.0 62.8 74% 47%
2.0 85.8 66% 44%