Ijeoma L. Princewill-Ogbonna
Department of Food Science and Technology,Michael Okpara University of Agriculture, Umudike, P.M.B. 7267, Umuahia, Abia State, Nigeria
Princewill C. Ogbonna
Department of Forestry and Environmental Management, Michael Okpara University of Agriculture, Umudike, P.M.B. 7267, Umuahia, Abia State, Nigeria
ABSTRACT
The heavy metals (Zn, Pb and Zn) concentrations in soil and medicinal plant samples from Aba city, Nigeria using atomic absorption spectrophotometer UNICAM 919 model was evaluated in a randomized complete block design. The results showed that there was a clear accumulation of metals in soil and medicinal plants in relation to vehicular emission in the city. A highest concentration of Zn (133.56±7.70 mg/kg) in soil was obtained from X2, Pb (29.71±1.56 mg/kg) and Cd (21.11±1.28 mg/kg) was in X5. The levels of Zn, Pb and Cd in soil were 15.85±18.03 - 133.56±7.70 mg/kg, 10.06±0.36 - 29.71±1.56 mg/kg and 1.07±0.08 - 21.11±1.28 mg/kg, respectively. In medicinal plants, the highest concentration of Zn was obtained in Azadiractha indica (34.58±2.07 mg/kg), Pb was in Psidium guajava (10.47±0.93 mg/kg) and levels of Zn, Pb and Cd were 9.02±1.40 - 34.58±2.07 mg/kg, 1.55±0.35 - 10.47±0.93 mg/kg and 0.02±0.0 - 1.44±0.11 mg/kg, respectively. The concentrations of metals in soil and medicinal plant were in decreasing order: Zn>Pb>Cd. Zinc in soil significantly correlated positively with Zn (0.956, p<0.01) and Cd (0.631, p<0.01) in plants; Pb in soil significantly correlated positively with Zn (0.825, p<0.01), Pb (0.810, p<0.01), Cd (0.578, p<0.05) in plants. The level of Cd in soil reflected significant pollution compared to concentrations in soils of urban cities in developing countries.
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How to cite this article
Ijeoma L. Princewill-Ogbonna and Princewill C. Ogbonna, 2011. Heavy Metal Content in Soil and Medicinal Plants in High Traffic Urban Area. Pakistan Journal of Nutrition, 10: 618-624.
DOI: 10.3923/pjn.2011.618.624
URL: https://scialert.net/abstract/?doi=pjn.2011.618.624
DOI: 10.3923/pjn.2011.618.624
URL: https://scialert.net/abstract/?doi=pjn.2011.618.624
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