Table 5 Concentrations of heavy metals in the upper Yangtze, Raohe and Wei River basins (mg/kg).
From: Soil heavy metal contamination assessment in the Hun-Taizi River watershed, China
As | Cd | Cr | Cu | Hg | Ni | Pb | Zn | ||
|---|---|---|---|---|---|---|---|---|---|
Upper Yangtze Basin7 | Mean | 6.21 ± 3.21 | 0.33 ± 0.10 | 75.49 ± 12.03 | 26.99 ± 8.59 | 0.08 ± 0.002 | 35.24 ± 9.18 | 27.90 ± 3.00 | 87.91 ± 15.77 |
Max. | 32.77 | 1.57 | 144.40 | 106.50 | 1.79 | 96.39 | 59.30 | 238.50 | |
Raohe Basin9 | Mean | 78.52 | 0.51 | 35.26 | 197.21 | — | 31.03 | 39.63 | 32.31 |
Max. | 318.05 | 1.60 | 97.09 | 793.52 | — | 66.35 | 222.19 | 72.09 | |
Wei River Basin38 | Mean | 3.89 ± 0.99 | 0.18 ± 0.24 | 50.12 ± 7.58 | 26.89 ± 6.93 | 0.07 ± 0.11 | 12.01 ± 3.69 | — | 62.33 ± 16.26 |
Max. | 5.86 | 1.20 | 73.40 | 35.60 | 0.39 | 19.08 | — | 93.30 |
