Fig. 2
From: Effectiveness of activated carbon masks in preventing anticancer drug inhalation
Schematic illustration of CPA adsorptive ability experiment. Figure 2 indicated a schematic illustration of CPA adsorptive ability of the mask. Each mask piece (5 cm2) was immersed in various concentrations of CPA solutions (10 mL) and shaken for 1 h at 20 °C. After immersion of one hour, CPA concentration of the solution was measured by HPLC