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Determination of Chromium, Cooper, Iron, Zinc, Cadmium and Led by Graphite Furnace Atomic Absorption Spectrometry in Seven Phytopharmaceutical Products

Control of heavy metal content in medicinal and aromatic plants is one of their quality assessment procedures. Depending on growing region, there are large differences in the uptake and concentrations of those in plant tissues. In this research, we determined the concentrations of Zn, Cr, Cd, Pb, Cu and Fe in three medicinal plants: Lonicera tatarica (flowers and fruits), Viburnum opulus (bark and fruits) and Sambucus ebulus (leaves, stems and fruits). The content of the heavy metals can be considered in normal limits, even for Pb2+ and Cr3+, markers for soil and air pollution. High levels of Fe2+/3+ have been determined in all samples. The study has been realized using GF-AAS and microwave digestion.