Table 1. Heavy metals concentration in contaminated soil as well as reference soil (mgkg^-1) and polluted water samples (mgL^-1).

HM	RS	HMCS	WW
Ni	2.30 ± 0.12	10.30 ± 0.11	0.75 ± 0.16
Cd	0.01 ± 0.00	2.40 ± 0.07	0.81 ± 0.01
Cu	8.50 ± 0.12	63.20 ± 0.14	0.79 ± 0.02
Zn	72 ± 1.15	92.42 ± 0.15	0.61 ± 0.01
Pb	2.80 ± 0.12	25.30 ± 0.11	0.88 ± 0.01

HM = heavy metal; RS = reference soil; HMCS = heavy metal contaminated soil; WW = waste water; Ni = nickel; Cd = cadmium; Cu = copper; Zn = zinc; Pb = lead.