Species	Trace metals	BCF			TF
Species	Trace metals	Abandoned site	Operating site	Control site	Abandoned site	Operating site	Control site
Panicum maximum	Zn	4.97 ± 1.76^a	3.77 ± 1.32^a	4.11 ± 2.56^a	0.51 ± 0.09^a	0.63 ± 0.09^a	1.78 ± 1.04^a
	Ni	97.17 ± 36.75^ab	12.33 ± 7.81^a	7.42 ± 6.72^b	1.92 ± 0.65^a	4.26 ± 1.73^b	2.53 ± 1.84^ab
	Cu	5.24 ± 1.30^a	11.36 ± 4.02^a	1.03 ± 0.88^a	0.67 ± 0.15^a	0.97 ± 0.36^a	0.12 ± 0.09^a
	Pb	2.28 ± 0.92^a	1.23 ± 0.53^a	1.26 ± 0.48^a	0.91 ± 0.42^a	0.84 ± 0.19^a	0.92 ± 0.20^a
	Cd	1.03 ± 0.43^a	0.34 ± 0.08^a	1.21 ± 0.76^a	0.48 ± 0.16^a	1.40 ± 0.89^a	0.99 ± 0.67^a
Eleusine indica	Zn	7.16 ± 2.41^a	4.70 ± 1.27^a	3.96 ± 2.38^a	0.67 ± 0.09^a	0.59 ± 0.11^a	0.88 ± 0.14^a
	Ni	111.98 ± 82.45^a	50.94 ± 19.64^ab	1.38 ± 0.64^b	1.55 ± 0.55^a	1.68 ± 1.25^a	2.85 ± 1.65^a
	Cu	5.30 ± 2.56^a	13.96 ± 8.42^a	3.08 ± 2.12^a	0.89 ± 0.50^a	0.85 ± 0.47^a	0.40 ± 0.27^a
	Pb	1.48 ± 0.63^a	2.75 ± 0.95^a	0.40 ± 0.07^a	0.88 ± 0.28^a	1.56 ± 0.84^a	0.84 ± 0.13^a
	Cd	0.27 ± 0.05^a	0.60 ± 0.28^a	0.62 ± 0.33^a	0.18 ± 0.04^a	1.44 ± 1.09^a	0.72 ± 0.09^a
Cynodon dactylon	Zn	4.18 ± 1.49^a	3.12 ± 0.85^a	5.95 ± 2.84^a	1.50 ± 0.65^a	0.73 ± 0.12^a	1.18 ± 0.33^a
	Ni	55.61± 17.25^a	39.26 ± 10.53^a	9.14 ± 8.70^b	3.59 ± 1.05^a	1.24 ± 0.53^b	3.10 ± 2.25^ab
	Cu	12.53 ± 6.51^a	9.32 ± 4.22^a	4.77 ± 0.85^a	1.06 ± 0.46^a	0.91 ± 0.30^a	0.62 ± 0.06^a
	Pb	1.20 ± 0.48^a	2.50 ± 1.48^a	0.71 ± 0.09^a	0.56 ± 0.21^a	2.13 ± 1.11^a	0.92 ± 0.08^a
	Cd	1.12 ± 0.43^a	0.55 ± 0.16^a	0.81 ± 0.80^a	0.73 ± 0.37^a	0.38 ± 0.08^a	0.59 ± 0.21^a