Bulletin of the National Research Centre

Table 4 Heavy metal content of Edege-Mbeki and Mararaban-Edege water samples

From: Effects of columbite/tantalite (COLTAN) mining activities on water quality in Edege-Mbeki mining district of Nasarawa state, North Central Nigeria

Parameters	E-M well (mg/L)	E-M pond (mg/L)	M-E well (mg/L)
Nickel (Ni)	0.008 ± 0.01	0.102 ± 0.001	0.032 ± 0.05
Manganese (Mn)	0.087 ± 0.026	0.099 ± 0.085	0.096 ± 0.086
Lead (Pb)	0.324 ± 0.0.047	0.358 ± 0.313	0.122 ± 0.018
Cadmium (Cd)	0.029 ± 0.002	0.025 ± 0.001	0.039 ± 0.002
Iron (Fe)	0.839 ± 0.736	6.99 ± 6.06	0.608 ± 0.03

E.M Edege-Mbeki, M.E Mararaban-Edege (control)

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