Research Article
[Retracted] Chemical Speciation and Potential Mobility of Heavy Metals in the Soil of Former Tin Mining Catchment
Table 3
Heavy metals speciation in the soil.
| S/N | Sample ID | Pb | Cu | Cr | Zn | As | Sn |
| Fraction 1: Exchangeable mg/kg (ppm) |
| 1 | S1 | 03.45 | 02.99 | 03.46 | 02.56 | 01.23 | 12.34 | 2 | S2 | 05.67 | 04.37 | 02.91 | 01.98 | 00.92 | 11.87 | 3 | S3 | 04.34 | 03.76 | 04.23 | 03.67 | 02.11 | 14.17 | 4 | S4 | 06.88 | 05.23 | 02.40 | 02.59 | 01.74 | 15.88 | 5 | S5 | 03.24 | 04.65 | 03.21 | 03.99 | 00.86 | 12.23 | | Mean | 04.71 | 04.20 | 03.22 | 02.95 | 01.37 | 13.29 | | %age | 09.34% | 06.44% | 07.98% | 09.55% | 11.53% | 14.64% |
| Fraction 2: Bound to carbonates mg/kg (ppm) |
| 1 | S1 | 08.29 | 11.29 | 08.97 | 06.87 | 02.87 | 25.98 | 2 | S2 | 11.34 | 08.34 | 09.37 | 05.49 | 03.29 | 28.56 | 3 | S3 | 09.88 | 07.35 | 10.10 | 09.30 | 04.21 | 30.25 | 4 | S4 | 07.78 | 08.34 | 06.56 | 05.34 | 02.39 | 28.99 | 5 | S5 | 10.84 | 09.23 | 09.23 | 06.53 | 02.65 | 25.40 | | Mean | 09.62 | 08.91 | 08.64 | 06.70 | 03.06 | 27.83 | | %age | 18.34% | 15.44% | 17.98% | 19.51% | 27.53% | 33.64% |
| Fraction 3: Bound to oxides mg/kg (ppm) |
| 1 | S1 | 16.23 | 15.88 | 10.00 | 10.76 | 04.21 | 53.23 | 2 | S2 | 18.29 | 19.24 | 14.21 | 12.34 | 05.53 | 59.65 | 3 | S3 | 12.87 | 17.30 | 15.99 | 13.21 | 03.92 | 61.23 | 4 | S4 | 19.02 | 11.02 | 16.37 | 10.98 | 05.67 | 58.34 | 5 | S5 | 17.25 | 14.83 | 12.31 | 15.23 | 09.34 | 50.85 | | Mean | 16.73 | 15.65 | 13.77 | 12.50 | 05.73 | 56.61 | | %age | 23.76% | 26.19% | 24.15% | 23.98% | 28.21% | 42.12% |
| Fraction 4: Bound to organics mg/kg (ppm) |
| 1 | S1 | 32.14 | 23.56 | 18.91 | 25.88 | 06.72 | 79.34 | 2 | S2 | 29.39 | 27.91 | 16.28 | 28.76 | 09.36 | 80.05 | 3 | S3 | 24.26 | 30.20 | 23.22 | 34.75 | 10.67 | 68.32 | 4 | S4 | 30.22 | 26.87 | 29.90 | 30.04 | 07.49 | 76.51 | 5 | S5 | 28.95 | 31.64 | 24.24 | 29.80 | 06.99 | 81.49 | | Mean | 28.99 | 28.03 | 22.51 | 29.84 | 08.24 | 77.14 | | %age | 26.16% | 28.91% | 30.75% | 33.58% | 40.53% | 52.40% |
| Fraction 5: Residual or inert mg/kg (ppm) |
| 1 | S1 | 48.21 | 62.51 | 32.44 | 54.38 | 11.23 | 102.34 | 2 | S2 | 52.78 | 70.46 | 21.96 | 78.23 | 14.24 | 098.34 | 3 | S3 | 61.10 | 49.80 | 38.75 | 59.00 | 10.96 | 112.87 | 4 | S4 | 57.91 | 53.77 | 50.02 | 63.22 | 08.34 | 118.34 | 5 | S5 | 43.55 | 50.24 | 43.25 | 49.30 | 20.34 | 101.45 | | Mean | 52.71 | 57.35 | 37.24 | 60.62 | 13.02 | 106.66 | | %age | 57.56% | 52.98% | 61.45% | 63.12% | 59.52% | 71.29% |
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