Research Article Background Concentrations of Potentially Harmful Elements in Soils of the Kette-Batouri Region, Eastern Cameroon
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2 OPEN ACCESS Research Journal of Environmental Toxicology ISSN DOI:.393/rjet Research Article Background Concentrations of Potentially Harmful Elements in Soils of the Kette-Batouri Region, Eastern Cameroon 1 B.T. Edith-Etakah, M. Shapi, 1 J. Penaye, 3 M.E. Mimba, 3 S.C. NguemheFils, D.S. Nadasan,,4 T.C. Davies and M.A. Jordaan 1 Centre for Geological and Mining Research, B.P. 333, Garoua, Cameroon Faculty of Natural Sciences, Mangosuthu University of Technology, 511 Mangosuthu Highway, Umlazi, KwaZulu Natal Province, Republic of South Africa 3 Laboratory of Image Processing, B.P. 41, Yaoundé, Cameroon 4 Department of Geology, University of Nigeria, Nsukka, Nigeria G
3 E E E E E
4 Kette N Main road Secondary road Tertiary road and track Locality Cameroon Central Africa republic km E
5 G G EF = [C metal /C normalizer ] soil/[c metal /C normalizer ] control CF = C m (sample)/c m (background) PLI = (CF1 CF CF3 ----CFN) 1/N
6 log C n I geo = 1.5B n 14 0'0"E 14 40'0"E 4 30'0"N 4 40'0"N 4 50'0"N 4 30'0"N 4 40'0"N 4 50'0"N Elevation (m) River 14 0'0"E km 14 40'0"E
7 14 0'00" 14 45'00" Mining site Post tectonic granitoid, gode type, neproterozoic Syn to latetectonic granitoid, neproterozoic 14 30'00" 14 50'00" Conglomerate, quartzite, sedimentary and volcano-sedimentary schist, Yaounde group Schist, Yaounde group Gneiss and micaschist, Yaounde group Pie chart of sampling points Cu Pb Zn Ni Co As Th Cr 14 0'00" 14 45'00"
8 600 (a) * Mn (ppm) As (ppm) Cd (ppm) V (ppm) Cr (ppm) Fe (wt%) 30 (b) Cu (ppm) Pb (ppm) Zn (ppm) Ni (ppm) Co (ppm) G
9 5 (a) 300 (b) Expected log normal values Expected log normal values (c) 0 (d) Expected log normal values Expected log normal values (e) 15 (f) Expected log normal values 3 1 Expected log normal values Observed values Observed values 15 G
10 G G G
11
12 4.90 (a) 4.90 (b) (c) (d)
13 4.90 (e) 4.90 (f) (g) 4.90 (h) G
14
15
16
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