Elements (ppm) | Sample sites S1 to S5 | ||
Enrichment Factor (EF) average ± SD | Contamination Factor (CF) average ± SD | Geo-accumulation Index (Igeo) average ± SD | |
Si | 1.281 ± 0.101 | 1.101 ± 0.001 | −0.134 ± 0.001 |
Al | 0.971 ± 0.082 | 0.835 ± 0.014 | −0.255 ± 0.007 |
Mg | 1.186 ± 0.108 | 1.019 ± 0.032 | −0.168 ± 0.013 |
Mn | 1.256 ± 0.077 | 1.083 ± 0.079 | −0.142 ± 0.032 |
Cu | 1.342 ± 0.173 | 1.163 ± 0.194 | −0.116 ± 0.075 |
Ni | 1.128 ± 0.241 | 0.984 ± 0.273 | −0.197 ± 0.111 |
Pb | 0.698 ± 0.152 | 0.601 ± 0.127 | −0.406 ± 0.096 |
Ti | 1.015 ± 0.175 | 0.868 ± 0.110 | −0.240 ± 0.057 |
Zn | 0.465 ± 0.043 | 0.402 ± 0.050 | −0.575 ± 0.055 |
K | 0.550 ± 0.070 | 0.475 ± 0.069 | −0.503 ± 0.067 |
Ca | 0.483 ± 0.051 | 0.415 ± 0.019 | −0.559 ± 0.020 |
Co | 0.843 ± 0.079 | 0.726 ± 0.059 | −0.316 ± 0.035 |
Cr | 1.084 ± 0.106 | 0.931 ± 0.036 | −0.207 ± 0.016 |