Table 4 Lead speciation, as a function of pH and log 
along the 100 ppm Pb isopleth of the model composite ore-brine at 100°Cab
along the 100 ppm Pb isopleth of the model composite ore-brine at 100°CabpH | log | Iron phasecsaturation | Cation | Chloride complexes | Sulfide complexes | Hydroxide complexes | Acetate complexes | Malonate complexes | Data set |
|---|---|---|---|---|---|---|---|---|---|
8.00 | -50.20 | Hm | 0.06 | 23.60 | 2.3 × 10-14 | 74.47 | 0.80 | 2.6 × 10-3 | 5 |
7.00 | -49.95 | Hm | 0.17 | 72.64 | 6.9 × 10-13 | 22.38 | 2.59 | 8.3 × 10-3 | 4 |
5.00 | -49.90 | Hm | 0.23 | 97.25 | 5.9 × 10-9 | 0.30 | 2.19 | 9.9 × 10-3 | 3 |
4.00 | -49.90 | Py | 0.24 | 99.21 | 6.0 × 10-7 | 0.03 | 0.51 | 8.9 × 10-3 | 2 |
3.00 | -49.90 | Py | 0.24 | 99.69 | 6.0 × 10-5 | 3.2 × 103 | 0.05 | 6.3 × 10-3 | 1 |