Figure 2.

Median mass lead release per unit surface area (log-scale) during a (a) 30 min and (b) 24-h reaction at pH 7.5 and DIC 5 mg C L⁻¹ from the CSTR. We compared lead release from a phosphate free condition, orthophosphate (1000 µg P L⁻¹) and three polyphosphates (1000 µg P L⁻¹). We also compared blends of orthophosphate (300 µg P L⁻¹) and polyphosphates (300 or 700 µg P L⁻¹) against orthophosphate (300 µg P L⁻¹). Each set represents at least two reactor runs, and error bars span the median absolute deviation of measurements. Tabulated data can be found in Table S1.