Figure 7From: Silica nanoparticles functionalized via click chemistry and ATRP for enrichment of Pb(II) ionThe comparison of supernatants’ Pb2+concentration in SiO 2 and SiO 2 -PEGMA solutions. The initial concentration of Pb2+ is 100 mg/l; the volume of Pb2+ is 10 ml; the weight of nanoparticles is 50 mg; the adsorption times are 0.5, 1, 2, and 3 h; and the temperature is 25°C.Back to article page