Evaluation of Lead, Cadmium and Copper Concentrations in Bee Honey and Edible Molasses
Problem statement: Content of Cadmium, lead and copper in 26 bee honey samples from different places of Assiut governorate (south of Egypt) and three different botanical origins (Clover, Multi-flower and Citrus) in addition to four edible molasses samples from Egypt market were evaluated by Differential Pulse Anodic Stripping Voltammetry (DPASV) in Briton-Robinson buffer solution at pH ~ 2.1, as well as atomic absorption spectrometry after wet digestion. Approach: The optimal deposition potentials and times for the detection of these metal ions in all sample solutions have been studied. Results: The concentration of each metal ion was determined by the standard addition method. The statistical parameters i.e., slope, standard deviation, correlation coefficient and confidence have been calculated. Conclusion/Recommendations: The results obtained using stripping voltammetry indicate that the average concentration of Cu ions ranged from 0.085-0.987 μg g−1. In addition, the average concentrations of Cd and Pb ions ranged 0.001-0.077 and 0.006-1.640 μg g−1; respectively. On the other hand, the average concentrations obtained using atomic absorption spectrometry of the same element mentioned above ranged from 0.077-0.991 μg g−1 for Cu; 0.001-0.087 μg g−1 for Cd and 0.007-1.650 μg g−1 for Pb.
Copyright: © 2010 Ahmed Hassan, Mahmoud A.A. Ghandour, Azza M.M. Ali and Hazim. A. Mahran. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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- Stripping voltammetry
- biological indicator