Development of methodology for drying environmental radioactive samples


  • Gustavo Santana a:1:{s:5:"pt_BR";s:4:"UFRJ";}
  • Katheren Nantes UFRJ
  • Alessandro Domingues UFRJ
  • Luciana Carvalheira IEN
  • Ademir da Silva UFRJ


In the Gamma Spectrometry technique of environmental samples, a commonly used practice used is drying, which objective is to mitigate the self-attenuation caused by the water naturally contained in the sample, in order to search the spectrometry from a comparable matrix, in line with the reproducibility of the results generated .

The experiments were carried out using an analog oven, varying the temperature by 5ºC per sample, allowing the study of radionuclide loss during the exposure of the analyzed object to the drying temperature of samples. The objective is to acquire the gamma spectrum of sand samples from Areia Preta – Guarapari/ES beach before and after exposing the sample to different temperatures, using a High Purity Germanium detector (HPGe), based on the hypothesis that there may be leakage of radionuclides in the drying process, and thus verify if the current drying methodology influences on the levels of 228Ra, 226Ra e 40K of the analyzed sample.




Como Citar

Santana, G., Nantes, K., Domingues, A., Carvalheira, L., & da Silva, A. (2021). Development of methodology for drying environmental radioactive samples. Instituto De Engenharia Nuclear: Progress Report, (4). Recuperado de



Nuclear Instrumentation Development