Transfer factors of natural radionuclides and Cs-137 from soil to plants used in traditional medicine in central Serbia

摘要

Transfer factors of natural radionuclides and (CS)-C-137 from soil to plants used in traditional medicine were determined. The transfer factors (TF) were calculated as Bq kg(-1) of dry plant per Bq kg(-1) of dry soil. Mass activity concentrations of Ra-226, Th-232, K-40 and Cs-137 in soil and plant samples were measured with high purity germanium detector (HPGe). The concentrations of As, Co, Cr, Cu, Mn, Ni, Pb and Zn were determined, as well as the cation exchange capacity (CEC) and the content of exchangeable cations (Ca, Mg, K, Na). Wide ranges of values were obtained for all the metals, especially for Cr and Ni.