Comparative Assessment of Selected Heavy Metals in Some Common Edible Vegetables Sold in Yenagoa Metropolis, Nigeria

Sylvester Chibueze Izah and Ayobami Omozemoje Aigberua
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Sylvester Chibueze Izah: Department of Biological Sciences, Faculty of Science, Niger Delta University, Wilberforce Island, Bayelsa State, Nigeria
Ayobami Omozemoje Aigberua: Department of Chemical Sciences, Faculty of Science, Niger Delta University, Wilberforce Island, Bayelsa State, Nigeria

Journal of Biotechnology Research, 2017, vol. 3, issue 8, 66-71

Abstract: This study comparatively assessed selected heavy metals in some vegetables (viz: Gongronema latifolium, Amaranthus hybridus, Piper guineense, Talinum triangulare, Telfairia occidentalis and Ocimum gratissimum) commonly used for culinary purpose in Yenagoa metropolis, Nigeria. The samples were purchased from Tombia and Opolo market in Yenagoa metropolis, Bayelsa state, Nigeria. The samples were dried, digested and analyzed using flame atomic absorption spectrometery. Result showed that the concentration of lead, cobalt and cadmium were below detection level. The comparative concentration of other heavy metals in the vegetables ranged from 1.85 - 3.55mg/kg (copper), 1.63 – 14.98 mg/kg (zinc), 5.83 – 186.59 mg/kg (manganese), 8.12 – 31.72 mg/kg (chromium), 5.01 – 16.03 mg/kg (nickel) and 307.60 – 1051.31 mg/kg (iron). Analysis of variance showed that there was significance variation (P

Keywords: Heavy metals; Health risk; Vegetables; Yenagoa metropolis. (search for similar items in EconPapers)
Date: 2017
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