Heavy metal concentration in soil and woody plants in a quarry |
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| Authors: | Princewill C Ogbonna Raphael Emea Jaime A Teixeira da Silva |
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| Institution: | 1. Department of Forestry and Environmental Management , Michael Okpara University of Agriculture , Umudike, PMB 7267 Umuahia, Abia State, Nigeria ogbonna_princewill@yahoo.com;3. Department of Forestry and Environmental Management , Michael Okpara University of Agriculture , Umudike, PMB 7267 Umuahia, Abia State, Nigeria;4. Faculty of Agriculture and Graduate School of Agriculture , Kagawa University , Miki-cho, Ikenobe 2393, Kagawa-ken 761-0795, Japan |
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| Abstract: | This study determined the concentration of three heavy metals zinc (Zn), lead (Pb), and cadmium (Cd) in soil and in a woody plant species, Milicia excelsa, at Ishiagu quarry, Nigeria. The highest soil concentrations of Zn, Pb, and Cd in soil were obtained at 1?m from the quarry site. In M. excelsa, the highest concentrations of Zn, Pb, and Cd were 3.12–9.1, 3.9–6.01, and 0.51–1.12?mg?kg?1, respectively. There were significant positive correlations between Cd and Zn (r?=?0.963) and Cd and Pb (r?=?0.974) in plants as well as between Cd and Pb (r?=?9.84) in soil. The level of Cd in soil reflected significant pollution compared to average global concentrations in soils. |
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| Keywords: | quarry heavy metals soil woody plants |
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