Table 4 Statistical description of heavy metal pollutants in the study area.
From: Soil heavy metal contamination assessment in the Hun-Taizi River watershed, China
Heavy metal | Concentrations(mg/kg) | SD | Ratio of mean to LNBV | Ratio of Max to LNBV | Percent of over LNBV | |||
|---|---|---|---|---|---|---|---|---|
Min | Max | Median | Mean | |||||
As | 1.48 | 20.00 | 6.73 | 7.21 | 3.05 | 0.68 | 1.89 | 13.24 |
Cd | 0.02 | 1.96 | 0.14 | 0.23 | 0.25 | 1.98 | 16.61 | 56.99 |
Cr | 9.21 | 164.60 | 61.97 | 65.05 | 25.23 | 1.26 | 3.18 | 48.90 |
Cu | 3.16 | 127.50 | 34.73 | 40.97 | 22.54 | 1.73 | 5.37 | 70.96 |
Hg | 0.01 | 0.67 | 0.09 | 0.12 | 0.09 | 2.10 | 12.18 | 56.25 |
Ni | 5.32 | 89.00 | 27.20 | 29.16 | 12.33 | 1.03 | 3.15 | 38.60 |
Pb | 0.32 | 93.58 | 27.95 | 30.18 | 13.51 | 1.25 | 3.86 | 58.09 |
Zn | 5.61 | 215.62 | 76.19 | 79.85 | 32.33 | 1.38 | 3.73 | 58.46 |
