The accumulations of trace elements and radionuclides in ten (10) anti-diabetic medicinal plants commonly used in Adamawa state, Nigeria were investigated to ascertain their distribution in the leaves, stem bark and roots bark samples respectively using INAA. The results of the analysis indicated the presence of traceable amount of both the non-radioactive elements (Al, As, Ba, Rb, Sc, Sr and V) and the following radioactive element (Eu, La, Lu, Sm, Th, U, and Yb) in the plants species. From the results, the elements with the highest concentration distribution are Al and the least distributed element is as. The highest concentration of Al (14560±146 mg/kg) was found in the root bark sample of Ageratum conyzoides with the leave sample of Anogeissus leiocarpus containing the highest amount of As (0.500±0.10 mg/kg). Analysis of the radioactive materials though, below the risk impact levels showed La in virtually all the plants species and widely distributed in all the plant tissues, with the highest concentration recorded in the leaves sample of Daniellia oliveri (1096±24.0 mg/kg). The results further shows the presence of small amount of U in only few of the plants species with the highest concentration recorded in the stem bark sample of Balamites aegyptiacae (0.47±0.0 mg/kg). Base on the outcome of this study, the distribution and accumulation of the trace element and radionuclides in the selected anti-diabetic medicinal plants will provides useful insight to the immediate community that relied on these plants for the treatment and management of diabetes mellitus to make an inform decision in the choice of plant tissue while being mindful of possible toxic related effects of other non-essential element in the medicinal plants.
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