Speciation of Heavy Metals in Sediments Sampled from Different Pollution Sources of Lake Dang, Ngaoundere-Cameroon

Speciation of Heavy Metals in Sediments Sampled from Different Pollution Sources of Lake Dang, Ngaoundere-Cameroon

In this paper, the speciation of five trace metallic elements (Cr, Pb, Ni, Zn, Cu) in sediments from Lake Dang Ngaoundere Cameroon was carried out by the sequential extraction technique. Samples were collected in six points around the lake during the rainy season: 1. waste water from the university...

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Veröffentlicht in:International Journal of Environmental Protection 2013-09, Vol.3 (9), p.10-10
Hauptverfasser: Sieliechi, J M, Noumi, G B, Fadimatou, M, Ali, A, Kapseu, C
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creator Sieliechi, J M
Noumi, G B
Fadimatou, M
Ali, A
Kapseu, C
description In this paper, the speciation of five trace metallic elements (Cr, Pb, Ni, Zn, Cu) in sediments from Lake Dang Ngaoundere Cameroon was carried out by the sequential extraction technique. Samples were collected in six points around the lake during the rainy season: 1. waste water from the university hostels, 2. from university restaurant, 3. from vehicle washing stations, 4. from cultivated areas, 5. from neighbouring villages, and 6. water out of lake. The metallic elements were measured by flame atomic absorption spectrometry. Results of the sequential extraction revealed that apart from Ni, other elements were weakly adsorbed on the surface of sediments. Trace metallic elements were mostly present in the exchangeable or acido-soluble forms in sediments. From this study, it appears that waste water from the university hostels contributes to pollution of the lake due to the high content of the five elements found in the lake sediment.
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title Speciation of Heavy Metals in Sediments Sampled from Different Pollution Sources of Lake Dang, Ngaoundere-Cameroon
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