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International Research Journal of Public and Environmental Health
Vol.1(4),pp.87-94,June 2014
ISSN 2350-1561
Article ID JPEH/14/044/, 08 pages
Copyright © 2014 Author(s) retain the copyright of this article. Author(s) agree that this article remain permanently open access under the terms of the Creative Commons Attribution License 3.0 International License

Original Research Paper

Evaluation of heavy metals in orange, pineapple, avocado pear and pawpaw from a farm in Kaani, Bori, Rivers State Nigeria

Accepted 4 June, 2016

*Kalagbor Ihesinachi and Diri Eresiya

Department of Science Laboratory Technology, School of Applied Sciences,Rivers State Polytechnic, P. M. B. 20 Bori. Rivers State Nigeria.

*Corresponding Author E-mail:
Tel.: +2348033098983


Eight heavy metals, Cd, Cu, Zn, Fe, Pb, Ni, Mn and Co were determined in four fruits namely: avocado pear, orange, pawpaw and pineapple using Atomic Absorption Spectroscopy (AAS) after wet digestion. The results obtained showed high levels of Cd (0.08-0.22 mg/kg), Cu (0.23-5.29 mg/kg), Fe (19.0-29.6 mg/kg), Pb (1.69-5.80 mg/kg), Ni (1.16-5.87 mg/kg), Mn (1.03-12.6 mg/kg), and Co (1.43-3.56 mg/kg) in all the four fruits studied. The concentration of Cu in avocado, pawpaw and pineapple exceeded the permissible limit of 0.05-0.5 mg/kg. Concentrations of Zn in all the four fruits were below the permissible limit of 99.40 mg/kg. The concentrations of Fe, Pb, Ni and Mn in all the four fruits exceeded the permissible limits, of 0.8 mg/kg, 0.20 mg/kg (0.l mg/kg for orange), 0.14 mg/kg and 0,30 mg/kg respectively, while Co concentrations were within the acceptable limits except in pawpaw which exceeded the permissible limit of 2.00 mg/kg. The order of concentration of heavy metals is: Fe>Zn>Pb>Ni>Cu>Co>Mn>Cd. The levels of concentrations recorded for Pb, Ni and Cd in these fruits are not acceptable as these heavy metals have been categorized as carcinogens.

Key words: farm, Kaani, carcinogens, diseases

Key words:

Kalagbor and Diri