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Natural radionuclides in electronic waste: an initial approach
Arykerne Nascimento Casado da Silva1, José Araújo Dos Santos Júnior1, Romilton Dos Santos Amaral1
1a Nuclear Energy Department , Federal University of Pernambuco , Recife , Brazil.
Trace radionuclides in discarded electronics pose potential risks. Gamma spectrometry detected primordial radioisotopes in microchips from obsolete computers, indicating ionizing radiation concerns for waste handlers.
Area of Science:
- Environmental Science
- Radiation Physics
- Materials Science
Background:
- Electronic waste (e-waste) contains trace radionuclides from raw materials.
- Improper disposal of obsolete electronics like personal computers creates environmental contamination risks.
- Ionizing radiation emission from e-waste is an additional concern for waste management.
Purpose of the Study:
- To qualitatively assess the potential exposure of workers to alpha, beta particles, and gamma rays from e-waste.
- To investigate the presence of radioisotopes in microchips from discarded electronic devices.
Main Methods:
- Analysis of 10 randomly selected microprocessors from discarded motherboards.
- Utilized gamma spectrometry to detect and quantify radionuclides.
- Qualitative assessment of potential radiation exposure pathways.
Main Results:
- Primordial radioisotopes were detected in the analyzed microchips.
- Confirmed the presence of naturally occurring radioactive materials in electronic waste components.
- Identified specific radioisotopes through gamma spectrometry.
Conclusions:
- Discarded electronic devices, specifically microchips, contain primordial radioisotopes.
- Workers handling e-waste may be exposed to ionizing radiation.
- Further quantitative studies are needed to assess actual radiation risks.
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