Table 4.

Geo-accumulation Indices of Metals in Dumpsite and Control Soil Samples

Sampling Location	Depth (cm)	Cu	Zn	Cd	Pb	Ni	Cr
Lagos
LLS1	15	6.32	3.67	3.65	6.56	0.99	−0.26
	30	5.83	3.44	3.70	5.76	−1.50	−0.30
	45	5.36	3.38	2.55	3.11	−2.02	−0.32
LLS2	15	−0.42	0.63	3.2 × 10−16	2.69	−2.54	−0.24
	30	−0.23	3.76	0.37	1.93	−3.09	−0.19
	45	−0.43	3.62	−0.07	2.24	−3.21	−0.28
Ibadan
ISS1	15	3.09	4.58	3.33	6.12	−1.07	−1.47
	30	1.70	0.18	2.34	4.68	−1.88	−2.29
	45	1.20	3.33	2.14	3.33	−1.33	−1.74
ISS2	15	−0.42	3.69	3.81	5.10	−1.14	−1.54
	30	1.40	2.00	2.68	3.60	−1.88	−2.29
	45	3.16	2.52	3.85	4.81	−1.31	−1.72
ISS3	15	−0.77	−0.44	−4.17	3.04	0.38	−0.08
	30	−1.38	−0.87	−4.17	3.08	0.03	−0.38
	45	−1.66	−2.37	0	2.57	−1.10	−1.51
CSS	15	−4.08	−1.59	−0.36	−2.26	−8.27	−5.09
	30	−3.16	−2.44	3.2 × 10−16	−2.15	−5.44	−5.24
	45	−3.83	−2.85	0.15	−1.12	−5.52	−4.73