Heavy Metal Distribution in Soil and Stream Sediment in Villages around Udegi Mbeki Mining District.

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24. November (2019).pdf (1.42 MB)

Date

2019-11-20

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Department of Geology and Mining, Nasarawa State University Keffi

Abstract

The Udegi Mbeki mining district a typical environment characterized by unorganized small-scale mining is a rugged terrain due to the Afu Ring complex intrusion and characterized by indiscriminate disposal of the mining waste which are likely to constitute environmental problems. This study is aimed at determining the extent of distribution and concentre ifon of some heavy metals (Pb, Zn Cu, Cd, As, Cr, Sn, Nb), pH and Electrical conduct. (EC) in soil and stream sediments of some surrounding villages (Garin ehu, . isa and Jenta). Fifteen samples (10 soil and 5 stream sediments) were o. ecte- Rested and analyzed using atomic absorption spectrophotometer (AAS). The in sice v omical results show that pH is generally acidic which range (4.5-6.7) for both so.; and or sam sediment and Electical conductivity are also low for the two-sample media c.. d ranged between (40.24-70.55) ps/cm. The results of heavy metal analysis for soil samples shows that the trend of mean concentration as: Nb (14.8693) >Sn (10.4619)>Cd (0.1873)>As (0.08019) > Cu (0.0493) >Zn (0.03284) >Pb (0.0224) >Cr (0.00559) in (mg/l). Also, Nb, Sn, Cd and As have mean concentrations higher than the local background values. Whilst for stream sediments mean trend of heavy metals indicates that: Nb (8.99970) >Sn (0.8854)> Cd (0.2656) > Zn (0.1928) > Cu (0.1518)> Cr (0.03758) > Pb (0.0224) > As (0.01566) in (mg/l). Similarly, Nb, Sn, Cd and As in stream sediment were higher than the local background concentration from upstream sediments free of mining activities in the area. These results suggest that the soil and stream sediments around Garin Shehu, Agasa and Jenta villages in Udegi Mbeki mining district are contaminated with Nb, Sn, Cd and As due to many years of random dumping of waste from the mining and processing activities in the area. Furthermore, anthropogenic sources may as well have contributed to the high concentrations.

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Keywords

Distribution, soil, stream sediments, heavy metals, mining,

Citation

Tanko l.Y. (2014). Petrogenesis and Mineralisation Potential of the Pegmatites of Keffiarea, North cental Nigeria. An unpublished PhD Thesis, Univerity of Mines and Technology Tarkwa, Western Region, Ghana. Mitchell, R.L. Burridge, S.C. 1979. Trace Element in soils and crops. Phil. Trans. Royal Soc. London B 288,15-24. Underwood, E.J. 1971. Trace Elements in human and animal nutrition, New York. Academic Press 461 - 477. Obaje, NG. Nzegbuna, A.I., Moumouni, A, Goki, N.G Channda M.S. (2006): Geology and Mineral Resources of Nasarawa State, Aninvestor Guide Put . hed by :asara Scientifique Vol. 1 Pj. - 20. Williams, C. H. David J. 1976. The accumulation of Cadmium from Phosphorus Fertilisers and their effect on the Cadmium Content of Plants. Soil Sci. 121, 86-93 Haw E„ Webb S„ (1979). mis n Mineral Exploration. 2nd Jitio Academic Press Inc. (Lone :.i) Ltc o49-563. Rose, V Gee Wuyep E.O., Tanko I.Y., (2012). Physicochemical Analysis and Distribution of Heavy Metals around Keffi and its Environs, Journal of Earth Science and Engineering 2,271-276. 53

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https://keffi.nsuk.edu.ng/handle/20.500.14448/5677

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