Trace Element Analysis of Some Leafy and Non Leafy Vegetable Samples in Anam District of Aghamelum Anambra State of Nigeria

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Author(s) Ezigbo, V. O. | Odinma, S.C.
Pages 119-124
Volume 4
Issue 3
Date March, 2015
Keywords Leavfy And Non Leafy Vegetable, Heavy Metal, Food Chain, Garden Egg, Scent Leaf, Irish Potato and Elephant Grass.

The bioaccumulation of trace metals such as Cd2+, Cr2+ Cu2+ and Co2+ metal ions from the environment by the following crops: Garden egg (Solanum), scent leaf (ocimum) alimenceness Irish potatoes (Ipomea batata) and Elephant grass (perineum purpumeum) in Anam Area of Anambra State of Nigeria were investigated .The concentrations of these metal ions in these crops were analyzed using UNICAM 919 Atomic Absorption Spectrophotometer (AAS). From the results, Cu showed the highest concentration level of all the other trace metals, analyzed. The concentration level of Cu in the roots of scent leaf, Irish potatoes, garden egg and Elephant grass in the order of ranking are 3.35 + 0.30 (mg/g) 2.87+ 0.40 mg/g 0.77+ 0.10 (mg/g) and 0.80+ 0.05 (mg/g) respectively. For the leaves of the forages the concentration of Cu are 3.40 + 0.30 (mg/g) for Garden egg, 2.35 + 0.30(mg/g) for Irish potatoes, 0.90 + 0.80 (m/g) for scent leaf and 0.65+0.05 (mg/g) for elephant grass. The rest concentration for Cr, Co, and Cd in the root stems and leaves of the leafy and non leafy samples are carefully tabulated. Co showed the least concentration level of all the other trace metals. The trend of the concentrations of the trace metals can be put as Cu > Cr> Cd > Co. It was observed from the results that the leafy sample contains higher concentration of trace metals than their roots and stems, with Cu and Cr concentration levels being higher than those of Co and Cd in all samples. Hence this higher concentration imposes toxicity to the ecosystem through the food chain and as well results to physiological effects, though there are normal requirements in small quantities of these metals needed to improve the status of nutrition in humans and livestock

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