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<p>Radioactivity levels of natural radionuclides (<sup>226</sup>Ra, <sup>232</sup>Th, <sup>40</sup>K) and the anthropogenic radionuclide (<sup>137</sup>Cs) in peloids from five Mexican locations—Los Azufres (LA), La Bocana (LBC), Catemaco (C), Taninul Pool (TP), and Taninul Extemporaneous (TE)—were investigated. The radionuclide concentrations, in Bq kg<sup>−1</sup> dry weight, ranged as follows: <sup>226</sup>Ra (19–1213), <sup>232</sup>Th (19–96), measured <sup>40</sup>K (&lt; 20–572), and <sup>137</sup>Cs (&lt; 7), which are consistent with values reported for therapeutic peloids used worldwide. The estimated annual effective dose for <sup>226</sup>Ra-enriched peloids, considering the short exposure times typical of therapeutic practices at spas, is well below the accepted skin dose limits for the general public. Therefore, the radioactivity levels found in the studied peloids are not significant and do not pose a radiological risk, making them safe for use in therapeutic and cosmetic applications.</p>

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Radioactivity levels in some commercial Mexican peloids

  • 期刊论文

  • 发表日期：

    2026年3月13日

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  • Alejandro M. Neyra-Suárez,
  • Héctor Cartas-Águila,
  • Clara M. Melián-Rodríguez,
  • Juan J. Piña-Leyte-Vidal,
  • Patricia González-Hernández,
  • Nadia V. Martínez-Villegas,
  • María Lourdes Mourelle-Mosqueira,
  • Oscar Díaz-Rizo

摘要

Radioactivity levels of natural radionuclides (226Ra, 232Th, 40K) and the anthropogenic radionuclide (137Cs) in peloids from five Mexican locations—Los Azufres (LA), La Bocana (LBC), Catemaco (C), Taninul Pool (TP), and Taninul Extemporaneous (TE)—were investigated. The radionuclide concentrations, in Bq kg−1 dry weight, ranged as follows: 226Ra (19–1213), 232Th (19–96), measured 40K (< 20–572), and 137Cs (< 7), which are consistent with values reported for therapeutic peloids used worldwide. The estimated annual effective dose for 226Ra-enriched peloids, considering the short exposure times typical of therapeutic practices at spas, is well below the accepted skin dose limits for the general public. Therefore, the radioactivity levels found in the studied peloids are not significant and do not pose a radiological risk, making them safe for use in therapeutic and cosmetic applications.