Figure 2From: Comparative absorption, distribution, and excretion of titanium dioxide and zinc oxide nanoparticles after repeated oral administration Dissolution pattern of nanoparticles in the acidic gastric fluid. AGF, pH 1.5; basic condition, DW, pH 7.4. Nanoparticles were incubated with AGF or DW for up to 24 h. (A) Image taken 5 min after incubation using a digital camera. (B) Percentage of dissolution measured using an ICP-MS at 24 h after incubation.Back to article page