Elements | As | Hg | Cd | Cr | Cu | Pb | Zn | Ni | |
Sample amount | 149 | 153 | 128 | 129 | 115 | 133 | 122 | 133 | |
Dry sample | unit | (μg/g) | (ng/g) | (ng/g) | (μg/g) | (μg/g) | (μg/g) | (μg/g) | (μg/g) |
average | 22.8 | 408.4 | 0.279 | 209.4 | 206.5 | 358.1 | 652.2 | 71.8 | |
Average of the crust, tong 1990 | 2.2 | 89 | 0.200 | 110 | 63 | 12 | 94 | 89 | |
Soil in Parcel River delta (Zhu Lixin et al., 2002) | 13 | 87 | 0.350 | 69 | 28 | 36 | 95 | 28 | |
Wet sample | unit | (μg/L) | (ng/L) | (ng/L) | (μg/L) | (μg/L) | (μg/L) | (μg/L) | (μg/L) |
average | 2.5 | 50.3 | 0.048 | 0.6 | 5.8 | 12.8 | 155.9 | 1.5 | |
Average of the overall Yangtze River water system (Zhang Licheng et al., 2006) | 0.88 | 23 | 0.02 | 0.9 | 1.26 | 0.71 | 4.18 | 0.61 | |
Dry sample/wet sample | unit | (L/g) | (L/g) | (L/g) | (L/g) | (L/g) | (L/g) | (L/g) | (L/g) |
average | 20.3 | 16.7 | 8.8 | 586.0 | 141.4 | 60.2 | 6.8 | 240.0 | |
Average of dry sample/average of wet sample | unit | (L/g) | (L/g) | (L/g) | (L/g) | (L/g) | (L/g) | (L/g) | (L/g) |
ratio | 9.3 | 8.1 | 5.8 | 360.1 | 35.7 | 27.9 | 4.2 | 47.9 |