Enrichment and Geoaccumulation of Pb, Zn, As, Cd, Mn and Cr in Farm Soils Around Tin Mine Areas in Plateau State, Nigeria

Mafuyai G.M.; Shaapera U.; Ayuba S.M

Enrichment and Geoaccumulation of Pb, Zn, As, Cd, Mn and Cr in Farm Soils Around Tin Mine Areas in Plateau State, Nigeria | AB Journals

Enrichment and Geoaccumulation of Pb, Zn, As, Cd, Mn and Cr in Farm Soils Around Tin Mine Areas in Plateau State, Nigeria

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African Journal of Environment and Natural Science Research

Vol. 3Issue 22020pp. 22–31Published 27 March 2020

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Abstract:

Enrichment factor (EF), contamination factor (CF), geo-accumulation index (Igeo), and pollution load indexes (PLI) were employed to evaluate Pb, Zn, As, Cd and Cr in farm soils around tin mine areas in Plateau State, Nigeria. Arsenic and Cd were graded as unpolluted to moderately polluted while Pb, Zn and Cr indicated moderate contamination (Igeo > 1) in the soil. EF values for Pb, Zn, Mn, As and Cr where attributed to natural processes with evidence of anthropogenic activities. Meanwhile, Cd showed significant contamination in soil at B4 with CF > 6.13 and a mean value of 3.79. The PLI values for 95 % of the sample sites were ≥ 1.88, which is an indication of soil quality deterioration. Key words: Geo-accumulation index, Enrichment factor, Contamination factor and Pollution load indexes.

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