Table 2 Summarized data for trace elements in surface waters from the non-KBD and KBD endemic areas in the Longzi County.
Parameters | Non-KBD | KBD | K–W | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mina | Maxa | Meana | Mediana | SD | CVb | K–S | Mina | Maxa | Meana | Mediana | SD | CVb | K–S | p value | |
Al | 0.37 | 20.37 | 5.34 | 3.17 | 5.09 | 13.88 | 0.00 | 0.93 | 22.22 | 6.19 | 4.13 | 5.58 | 6.00 | 0.01 | 0.21 |
Si | 2.35 | 18.54 | 8.23 | 7.18 | 3.84 | 1.63 | 0.00 | 1.72 | 17.16 | 6.91 | 6.19 | 3.29 | 1.92 | 0.00 | 0.09 |
V | 0.01 | 1.17 | 0.34 | 0.25 | 0.28 | 28.34 | 0.00 | 0.11 | 0.76 | 0.36 | 0.35 | 0.15 | 1.33 | 0.20 | 0.02 |
Mn | 0.00 | 0.28 | 0.04 | 0.02 | 0.05 | 25.24 | 0.00 | 0.00 | 0.06 | 0.02 | 0.02 | 0.02 | 16.42 | 0.10 | 0.06 |
Fe | 0.58 | 271.70 | 105.33 | 93.37 | 69.81 | 120.79 | 0.20 | 2.86 | 71.99 | 19.71 | 17.31 | 13.10 | 4.58 | 0.16 | 0.00 |
Co | 0.02 | 0.18 | 0.06 | 0.06 | 0.03 | 1.80 | 0.12 | 0.01 | 0.44 | 0.04 | 0.02 | 0.08 | 15.94 | 0.00 | 0.00 |
Ni | 0.02 | 2.47 | 1.15 | 1.06 | 0.52 | 25.76 | 0.20 | 0.11 | 0.84 | 0.32 | 0.29 | 0.17 | 1.58 | 0.01 | 0.00 |
Cu | 0.00 | 0.64 | 0.16 | 0.10 | 0.17 | 165.49 | 0.00 | 0.02 | 0.44 | 0.15 | 0.14 | 0.10 | 5.43 | 0.00 | 0.37 |
Zn | 0.03 | 5.49 | 1.03 | 0.55 | 1.18 | 34.84 | 0.00 | 0.01 | 3.57 | 0.47 | 0.18 | 0.89 | 177.33 | 0.00 | 0.00 |
As | 0.01 | 1.55 | 0.29 | 0.18 | 0.33 | 41.57 | 0.01 | 0.17 | 1.49 | 0.58 | 0.49 | 0.32 | 1.95 | 0.02 | 0.00 |
Se | 0.07 | 2.21 | 0.46 | 0.25 | 0.49 | 6.81 | 0.00 | 0.04 | 0.33 | 0.14 | 0.12 | 0.08 | 2.08 | 0.05 | 0.00 |
Mo | 0.13 | 1.03 | 0.47 | 0.41 | 0.25 | 1.96 | 0.01 | 0.02 | 0.55 | 0.25 | 0.20 | 0.18 | 11.39 | 0.14 | 0.00 |
I | 0.01 | 0.42 | 0.10 | 0.07 | 0.09 | 17.31 | 0.00 | 0.02 | 0.16 | 0.05 | 0.05 | 0.03 | 1.50 | 0.12 | 0.00 |