Table 2.
Limits of detection (LODs), free ion dynamic ranges, free ion maximum permissive concentrations (MPCs), regression equations and corresponding R2 values for Synechococcus sp. PCC 7942 pBG2120 for each metal tested in terms of free ion.
| Metal | Free ion LODs (μM) | Free ion dynamic range (μM) | Free ion MPCs (μM) | Regression equation | R2 |
|---|---|---|---|---|---|
| Zn2+ | 0.97 | 0.97–2.04 | 2.04 | y = 66.2 x – 60.94 | 0.92 |
| Cd2+ | 1.54 | 1.54–5.35 | 5.35 | y = 14.36 x – 17.72 | 0.96 |
| Ag+ | 0.05 | 0.05–0.29 | 0.29 | y = 219.73 x – 11.50 | 0.97 |
| Cu2+ | 0.027 | 0.027–0.05 | 0.05 | y = 1965.88 x – 49.64 | 0.99 |
| Hg2+ | 11* | 11–72* | 72* | y = 0.45 x – 2.29 | 0.99 |
| Co2+ | 0.88 | 0.88–2.66 | 2.66 | y = 8.74 x – 1.81 | 0.89 |
*
, Hg2+ concentrations are in picomolar (pM); y = bioluminescence induction factor (BIF); x = free ion metal concentration (μM).