Table 3.

THQ and Hazard Index for different heavy metals from consumption of two fish species obtained from Ogun and Eleyele River.

Site	Specie	Organ	Target Hazard Quotient (THQ)
			As	Cd	Co	Cr	Mn	Ni	Pb	HI
Ogun River	Clarias gariepinus	Liver	0.232	0.246	0.008	–	–	0.0004	0.0015	0.246
		Muscle	0.177	0.188	0.008	0.00005	–	0.0006	0.0034	0.188
		Gills	2.907	2.925	0.013	0.0002	–	0.0009	0.003	2.925
	Sarotherodon melanotheron	Liver	1.15	0.006	0.018	0.0002	0.00001	0.0009	0.0038	1.179
		Gills	0.958	0.005	0.016	0.0006	0.000007	0.0008	0.0041	0.984
		Muscle	0.643	0.005	–	0.0004	0.00002	0.0007	0.0022	0.651
Eleyele River	Clarias gariepinus	Gills	0.346	0.005	0.01	0.0006	0.00002	0.0007	0.0035	0.366
		Liver	–	0.004	0.009	0.0002	0.00002	0.0007	0.003	0.017
		Muscle	0.682	0.003	0.018	0.0006	–	0.0003	0.0019	0.705
	Sarotherodon melanotheron	Gills	0.101	0.004	0.014	0.00006	–	0.00008	0.0005	0.121
		Liver	–	–	0.0004	–	–	0.0007	0.0011	0.003
		Muscle	–	0.001	0.001	0.00008	–	0.0003	0.0034	0.006