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Journal of Biological Sciences

Year: 2018 | Volume: 18 | Issue: 3 | Page No.: 135-143
DOI: 10.3923/jbs.2018.135.143
Estimated Heavy Metal Residues in Egyptian Vegetables in Comparison with Previous Studies and Recommended Tolerable Limits
Gomaa Nour-Eldein Abdel-Rahman , Mohamed Bedair Mohamed Ahmed, Essam Mahmoud Saleh and Ahmed Sayed Morsy Fouzy

Abstract: Background and Objective: Accumulation of heavy metals in vegetables might represent a major problem that could affect the food safety and human health. The objective of this study was to estimate the levels of heavy metals in potato, tomato and cucumber samples collected from some Egyptian governorates and compare the levels of recent contamination with these obtained from previous studies and the recommended tolerable limits. As well as, to evaluate the potential risk of studied heavy metals for public health. Materials and Methods: The experimental design was established to search for the hazards of 5 heavy metal residues in 3 common consumed vegetables collected from 3 certain locations of each of 4 governorates involved more than 25% of the Egyptian population. Thirty six samples, each of potato, tomato and cucumber were collected from Egyptian local markets of four governorates (Cairo, Alexandria, Giza and El-Faiyum). Results: The highest average concentrations of Pb were detected in all vegetable samples of Ibshway as 0.96, 0.25 and 0.58 mg kg–1 for potato, tomato and cucumber samples, respectively. Meanwhile, the highest average concentration of Cd was detected in potato samples of Al-Omraniyah as 0.16 mg kg–1. Chromium was detected only in cucumber samples of Helwan and Al-Maadi. With respect to Cu and Ni, the highest average concentrations were recorded for potato samples of Dokki as 2.39 and 0.49 mg kg–1, respectively. Additionally, the results revealed that values of the estimated daily intake of heavy metals, for a typical adult person, were located within the safe limits. Qualitative data showed that the highest concentration levels of Pb, Cd, Cu and Ni were obtained from potato samples comparing with those of tomato and cucumber samples. As well as all potato and tomato samples were completely Cr-free, while cucumber samples exhibited 16.6% Cr-contamination. Conclusion: The estimated daily intake of heavy metals in vegetable samples of the current study was less than the recommended tolerable daily intake.

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How to cite this article
Gomaa Nour-Eldein Abdel-Rahman, Mohamed Bedair Mohamed Ahmed, Essam Mahmoud Saleh and Ahmed Sayed Morsy Fouzy, 2018. Estimated Heavy Metal Residues in Egyptian Vegetables in Comparison with Previous Studies and Recommended Tolerable Limits. Journal of Biological Sciences, 18: 135-143.

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