Relationship between radioactivity and toxicity in some medicinal plants

Abstract

Plants absorb water, nutrients and minerals from the soil through their root. Also, minerals, the radionuclides present in the growing media also are absorbed by plant parts following the same pathway. Consequently, it is important to determine the concentrations of these radionuclides in edible plants to access the associated risk to human health. In the present work, the levels of natural radioactivity and the level of some toxic elements in 17 medicinal plants, commonly used in Egypt, were measured using high-purity germanium gamma spectrometry and atomic absorption, respectively. The investigated plants were sub-grouped according to the edible parts into leave samples (n = 8), roots (n = 3), and seeds (n = 6). Also, the specific activity of both radon and thoron was measured by using alpha emitters registration which is emitted from radon and thoron gases in CR-39 nuclear track detectors. Additionally, the concentration of some toxic elements (Cu, Zn, Cd and, Pb) in six samples of medicinal plants was determined by atomic absorption spectrometry.

The presence of radiotoxic 210Po and 210Pb in Ukrainian wild medicinal plants and the assessment of related dose and cancer risk

“…In the case of herbal plants, which are often consumed or used in infusions as part of a daily diet, it is crucial to determine their effect on human health. This is particularly important since studies have shown that certain parts of the plant, especially leaves, could be highly contaminated with radionuclides (Abdelfadeel et al, 2023;Desideri et al, 2010Desideri et al, , 2011Kovács et al, 2015;Moniakowska et al, 2020;Monica et al, 2020;Narayana & Prakash, 2007;Olszewski et al, 2019;Puchkova & Bogdanova, 2015Shuaibu et al, 2023;Skwarzec et al, 2001;Sussa et al, 2013). Therefore, there is a need to monitor the radionuclide composition of plants harvested in Ukraine for medicinal purposes.…”