Table 1 Table of statistical analysis of geochemical data of heavy metals in soil samples.
Element | Sample size (number) | Maximum/(10−6) | Minimum/(10−6) | Mean/(10−6) | Standard deviation | Variable coefficient/% |
|---|---|---|---|---|---|---|
As | 174 | 35.453 | 5.172 | 19.836 | 7.239 | 36.496 |
Cd | 174 | 0.941 | 0.115 | 0.446 | 0.201 | 45.066 |
Cr | 173 | 102.000 | 63.600 | 87.022 | 8.497 | 9.764 |
Cu | 171 | 50.600 | 22.300 | 35.575 | 5.788 | 16.269 |
Hg | 174 | 0.217 | 0.063 | 0.129 | 0.035 | 27.359 |
Ni | 175 | 45.600 | 20.700 | 34.709 | 5.576 | 16.585 |
Pb | 175 | 84.700 | 29.000 | 54.538 | 14.259 | 26.145 |
Zn | 174 | 184.000 | 68.600 | 124.009 | 23.230 | 18.733 |
