Abstract
In the present work, we determined activity concentrations of ten Medicinal herbs using gamma spectrometry. The radioactivity concentration of 226 Ra, 232 Th, 40 K and 137 Cs were 2.82, 0.63, 984.32, 0.28 Bq/kg, respectively. These doses are not hazardous to the general public's health. The mean values of radium equivalent activity (Raeq), absorbed dose rates (D), annual effective dose (De) and external hazard index (Hex) are 79.51 Bq/kg, 42.73 nGy-1 , 52.40 µSv and 0.21, respectively. Medicinal plants used to make tea do not contain a concentration of tested radionuclides that would cause negative consequences to one's health.
Highlights
The ability to determine the effects of radiation exposure from both terrestrial and cosmogenic sources includes knowledge of radionuclide distribution and radiation levels in the surrounding environment
The cancer risk and the committed effective dose are critical in determining the effect it will have, appropriate intervention mechanisms are deployed to mitigate radioactive impacts (GARCÊZ, 2018a; LOPES et al, 2020)
The aim of this study is to determine the activity concentrations of natural and artificial radionuclides and radiological hazard parameters in ten Medicinal herbs that could be used as tea
Summary
The ability to determine the effects of radiation exposure from both terrestrial and cosmogenic sources includes knowledge of radionuclide distribution and radiation levels in the surrounding environment. The amount of radionuclides in human food must be determined since it presents a high risk for cancer. Plants could absorb the radionuclide from the ground through roots increasing the risk of radiation. Medicinal herbs are a good example of plants that provide a wide surface to the radioactive fallout since they grow approximately to a height of five meters and have broader leaves (JIBIRI et al, 2016). The plants used in traditional medicine are outstanding plants for tracking and researching radioactive fallout. The cancer risk and the committed effective dose are critical in determining the effect it will have, appropriate intervention mechanisms are deployed to mitigate radioactive impacts (GARCÊZ, 2018a; LOPES et al, 2020)
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