Figure 3
Macroscopic zinc uptake/retention data for a) control, b) pH-aggregated, c) ionic strength-aggregated, and d) temperature-aggregated nanoparticles. “Adsorbed” samples (green columns) represent pH 6.0 ± 0.1, 0.1 M NaNO3, “salt added” samples (yellow columns) represent pH 6.0 ± 0.1 and 0.1-0.6 M NaCl, and “pH dropped” samples (red columns) represent pH 5.0 ± 0.1, 0.1 M NaNO3, 0.1-0.6 M NaCl.