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This study focuses on the accumulation of metal ions (Pb²⁺, Zn²⁺, Cu²⁺, Fe²⁺) in Phaseolus vulgaris seeds (Fabaceae family) collected from metalliferrous / non- metalliferrous areas in Maramures County. By “metalliferous areas” we will understand following in this research paper only areas displaying such pollution, as opposite to the other areas, consequently labeled as “non-metalliferous”. Four different concentrations of metal ions were used and their imbibition’s degree into the seeds was investigated. The accumulation of metal ions in the seeds of P. vulgaris increases as the initial concentration of metal ions is higher. Even more, the seeds growing in non-metalliferous areas display a higher absorption of all metal ions, except the Fe²⁺, than the seeds growing in metalliferous areas. From an anatomical point of view, we have observed that regardless of concentration, the metal ions were able to penetrate the seed through the hilum, up to the coat.

Keywords: Phaseolus vulgaris, lead, copper, iron, zinc, heavy metal accumulation, atomic absorption spectrometry, optical microscopy