Table 2.
Mean difference between essential and potentially toxic elements concentration (μg/L) in HM-baseline (T1) and HM-concentrate (T2) (n = 49).
| Element | Comparison | Mean difference | 95% CrI Lower limit | 95% CrI Upper limit |
|---|---|---|---|---|
| Al | T2 - T1 | −7.99 | −39.65 | 23.67 |
| As | T2 - T1 | −0.004 | −0.05 | 0.04 |
| Cd | T2 - T1 | −0.02 | −0.11 | 0.07 |
| Cr | T2 - T1 | 1.25 | −0.31 | 2.70 |
| Fe | T2 - T1 | 72.76 | −29.93 | 171.65 |
| Hg | T2 - T1 | 0.03 | −0.05 | 0.12 |
| Mn | T2 - T1 | 0.80 | 0.16 | 1.43 |
| Ni | T2 - T1 | −0.28 | −1.62 | 1.17 |
| Pb | T2 - T1 | −6.13 | −8.63 | −3.61 |
| Se | T2 - T1 | 6.74 | 4.66 | 8.86 |
| Sn | T2 - T1 | 0.48 | −0.70 | 1.68 |
| Tl | T2 - T1 | 0.03 | −0.01 | 0.06 |
T1 – HM-baseline; T2 – HM-concentrate; 95% CrI: Credible Interval 95%.