Heavy metal concentrations (mg/kg) in C. nigrodigitatus from Ologe and Badagry lagoons.

Table 1: Heavy metal concentrations (mg/kg) in C. nigrodigitatus from Ologe and Badagry lagoons.

OLOGE LAGOON
Wet Season					Dry Season				FEPA/WHO limit
	Mean	S.E	Minimum	Maximum	Mean	S.E	Minimum	Maximum
Cr	0.1	0.01	0.03	0.16	0.09	0.01	0.01	0.19	0.15
Cd	0.05	0.01	0.01	0.08	0.06	0.01	0	0.18	2
Fe	30.73	2.66	10.34	43.42	37.21	2.22	23.1	51.2	100
Ni	0.07	0.06	0	0.9	0.08	0.01	0	0.21	0.5
Cu	1.75	0.16	0.6	2.6	1.58	0.22	0.24	2.6	1 - 3
Zn	31.63	2.96	16.54	61.03	37.88	2.16	23.16	54.22	75
Pb	1.42	0.12	0.87	2.11	1.25	0.15	0.07	2.16	2
BADAGRY LAGOON
Wet Season					Dry Season				FEPA/WHO limit
	Mean	S.E	Minimum	Maximum	Mean	S.E	Minimum	Maximum
Cr	0.03	0	0.01	0.06	0.06	0.01	0.01	0.13	0.15
Cd	0.05	0.01	0.02	0.08	0.09	0.03	0.02	0.54	2
Fe	16.92	1.29	8.4	26.36	22.32	1.65	11.98	34.76	100
Ni	0.02	0	0	0.06	0.09	0.04	0.01	0.55	0.5
Cu	0.87	0.1	0.17	1.45	1.37	0.13	0.6	2.42	1 - 3
Zn	21.99	2.63	10.1	43.1	25.08	2.2	12.44	43.22	75
Pb	0.67	0.12	0.05	1.67	1	0.16	0.05	2.01	2

S.E: Standard Error, WHO: World Health Organization.