Fig. 4From: Synthesis of Quercetin Loaded Nanoparticles Based on Alginate for Pb(II) Adsorption in Aqueous Solution a The effect of pH on the adsorption of Pb(II) ions; the initial concentration of Pb(II) ions was 500 mg L−1. b The effect of pH on the Zeta potential of AN and Q-AN; the initial concentration of Pb(II) ions was 500 mg L−1. c The effect of initial Pb(II) concentration on the adsorption of Pb(II); the initial pH was 7. d The effect of initial Pb(II) concentration on the equilibrium adsorption of Pb(II); the initial pH was 7Back to article page