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<p>In this study, the specific activities of the radionuclides <sup>226</sup>Ra, <sup>232</sup>Th, <sup>40</sup>K, and <sup>137</sup>Cs in popular pasta samples were measured. The risk indices of the annual effective dose received (AED) and the permitted consumption rate (CR) were calculated.12 samples of pasta were collected from the food stores of Arak city. The specific activities of the mentioned radionuclides were measured by gamma-ray spectrometry using a high-purity germanium (HPGe) detector with a relative efficiency of 80%. The specific activities of radionuclides ranged from the minimum detectable activity (MDA) to 2.55 for <sup>226</sup>Ra, from MDA to 19.84 for <sup>232</sup>Th, and from 44.3 to 88.2 for <sup>40</sup>K in Bq/kg. The specific activity of <sup>137</sup>Cs for all samples was ≤ MDA (0.88&#xa0;Bq/kg). The average values for annual effective dose and allowed consumption rate were calculated as 9.31 µSv/y and 491&#xa0;kg/y. The results indicate that the radiological parameters for the analyzed pasta samples are well below international safety limits, suggesting no significant radiological health risk to consumers.</p>

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Radiological assessment and dose evaluation from natural radionuclides in common pasta

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年12月19日

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  • Hossein Sadeghi,
  • Reza Pourimani,
  • Mohadese Feyzi

摘要

In this study, the specific activities of the radionuclides 226Ra, 232Th, 40K, and 137Cs in popular pasta samples were measured. The risk indices of the annual effective dose received (AED) and the permitted consumption rate (CR) were calculated.12 samples of pasta were collected from the food stores of Arak city. The specific activities of the mentioned radionuclides were measured by gamma-ray spectrometry using a high-purity germanium (HPGe) detector with a relative efficiency of 80%. The specific activities of radionuclides ranged from the minimum detectable activity (MDA) to 2.55 for 226Ra, from MDA to 19.84 for 232Th, and from 44.3 to 88.2 for 40K in Bq/kg. The specific activity of 137Cs for all samples was ≤ MDA (0.88 Bq/kg). The average values for annual effective dose and allowed consumption rate were calculated as 9.31 µSv/y and 491 kg/y. The results indicate that the radiological parameters for the analyzed pasta samples are well below international safety limits, suggesting no significant radiological health risk to consumers.