Fig. 8
Total dissolution (all lung regions and the gastrointestinal tract) of particles normalized to deposition of material in the respiratory tract. Monodisperse aerosol (concentration = 1.0 µg/m3) of indicated sized particles (density = 3 g/cm3) were inhaled for 8-h/day for 3 years by adult male exposed while sitting at rest. The daily dissolution reflects that occurring on day 1095 of exposure with gastrointestinal absorption of 10%