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Bulletin of the National Research Centre

Table 6 Enrichment factor for water samples using iron (Fe) as a reference element for average

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

Location/site

Source

Enrichment factor (EF)

Ni

Mn

Pb

Cd

Edege-Mbeki

Well

0.477

0.259

38.62

11.52

Mining ponds

0.729

0.035

5.12

1.19

Mararaban-Edege (control)

Well

2.63

0.39

20.07

21.38

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