Trace metal Upstream Downstream
V 0.9823 0.9023
Mn 0.2839 0.8083
Fe 0.9837 0.6927
Co 0.7291 0.9812
Ni 0.8926 0.8278
Cu 0.4302 0.8216
Zn 0.9287 0.3093
As 0.1927 0.8291
Se 0.9628 0.7382
Mo 0.6298 0.9278
Ag 0.8276 0.9287
Cd 0.9726 0.8298
Pb 0.8273 0.8192
Table 5: Significant correlation coefficient in the relationship between trace metals in the snail tissue and sediment samples