Table 3: Spearman’s rho correlation coefficients for soil properties and PTM concentrations (). Significant correlations are marked with or .

VariablesMoisture content (%)BD (g/cm3)pHCEC (meq/100 g)Sand (%)Silt (%)Zn (mg/kg)Mn (mg/kg)Cu (mg/kg)Pb (mg/kg)

Soil properties
BD0.3091
pH0.3641
CEC1
TOC0.278−0.5710.341
Sand0.4570.3750.4880.4091
Silt−0.459−0.362−0.531−0.450−0.9791
Clay−0.6400.515

Metal concentrations
Zn0.4451
Mn0.4000.343−0.3880.4301
Cu0.3190.5430.556−0.5930.4350.5211
Pb0.5460.442−0.4710.4150.3370.7501
Cd0.2960.5230.318−0.3790.3790.5570.504