Research Article
[Retracted] Chemical Speciation and Potential Mobility of Heavy Metals in the Soil of Former Tin Mining Catchment
Table 6
Analysis of heavy metals speciation.
| Fraction | Description | Pb | Cu | Cr | Zn | As | Sn |
| 1 | Exchangeable | 09.34% | 06.44% | 07.98% | 09.55% | 11.53% | 14.64% | 2 | Bound to carbonates | 18.34% | 15.44% | 17.98% | 19.55% | 27.53% | 33.64% | 3 | Bound to oxides | 23.76% | 26.19% | 24.15% | 23.98% | 28.21% | 42.12% | 4 | Bound to organics | 26.16% | 28.91% | 30.75% | 33.58% | 40.53% | 52.40% | 5 | Residual or inert | 57.56% | 52.98% | 61.45% | 63.12% | 59.52% | 71.29% | | Sum of concentration of metals (mg/kg) | 22.55 | 22.82 | 17.07 | 22.52 | 06.28 | 56.30 | | Potential mobility | 52.73% | 54.88% | 42.34% | 52.12% | 16.72% | 89.14% |
|
|