Fig. 3From: Derivation of first-order dissolution rates to estimate particle clearance and burden in the human respiratory tractRemaining particle mass (solid line) over time for an initial particle size of 0.5 µm with ρ = 3.0 g/cm3 and k = 1 × 10−6 g/cm2 per day (moderately soluble). The dotted and dashed lines (λ%) are the remaining mass approximated using first-order rate constants estimated based on the time to reach specified percentages of mass remainingBack to article page