Research Article
Using Lead Concentrations and Stable Lead Isotope Ratios to Identify Contamination Events in Alluvial Soils
Table 3
Lead and heavy metal concentrations and Pb isotopic compositions in soil profile at Windsor site (STE-1).
| Depth (cm) | As mg kg−1 | Cd mg kg−1 | Cu mg kg−1 | Pb mg kg−1 | Zn mg kg−1 | 204Pb/206Pb | 207Pb/206Pb | 208Pb/206Pb |
| 0–20 | 7.20 | 0.39 | 23.0 | 18.75 | 85.0 | 0.0549 | 0.8555 | 2.0898 | 20–40 | 6.76 | 0.44 | 29.0 | 18.32 | 104.0 | 0.0553 | 0.8598 | 2.1000 | 40–60 | 6.78 | 0.50 | 34.0 | 20.31 | 106.0 | 0.0553 | 0.8607 | 2.0968 | 60–80 | 6.45 | 0.47 | 31.0 | 21.47 | 109.0 | 0.0554 | 0.8609 | 2.0950 | 80–100 | 5.88 | 0.57 | 36.0 | 26.38 | 119.0 | 0.0560 | 0.8714 | 2.1104 | 100–120 | 3.01 | 0.30 | 22.0 | 19.89 | 89.0 | 0.0556 | 0.8654 | 2.1066 | 120–140 | 4.68 | 0.47 | 28.0 | 27.96 | 105.0 | 0.0555 | 0.8622 | 2.0999 | 140–160 | 4.24 | 0.53 | 28.0 | 34.70 | 111.0 | 0.0562 | 0.8724 | 2.1116 | 160–180 | 7.16 | 0.80 | 44.0 | 50.82 | 144.0 | 0.0559 | 0.8693 | 2.1094 |
| Mean | 5.79 | 0.49 | 31.0 | 26.51 | 108.0 | 0.0555 | 0.8641 | 2.1021 | S.D | 1.48 | 0.13 | 6.78 | 10.57 | 17.12 | 0.0004 | 0.0057 | 0.0076 | Skewness | -0.95 | 1.17 | 0.79 | 1.80 | 0.92 | 0.08 | 0.20 | | Kurtosis | -0.31 | 2.83 | 0.78 | 3.25 | 1.98 | | | |
| Criterion A [19] | 6 | 1.5 | 40 | 50 | 110 | — | — | — | Criterion B | 30 | 5 | 100 | 500 | 500 | — | — | — | Criterion C | 50 | 20 | 500 | 1500 | 1500 | — | — | — |
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