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Natural radioactivity concentration measurements in shrimp and sea bass samples from the Mexican Pacific Ocean and the Gulf of Mexico (4 pages)

    1. [1] Universidad Nacional Autónoma de México

      Universidad Nacional Autónoma de México

      México

  • Localización: Revista Mexicana de Física, ISSN-e 0035-001X, Vol. 69, Nº. 6, 2023
  • Idioma: inglés
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  • Resumen
    • The radioactivity concentration for shrimp and sea bass retrieved from the Mexican Pacific Ocean and the Gulf of Mexico is reported in this work. The activity of ^(40)K and ^(208)Tl was determined with gamma spectroscopy using a High Purity Germanium detector. Overall, the radioactivity concentration of samples from the Mexican Pacific Ocean is higher than from the Gulf of Mexico. The ^(40)K concentration measured for shrimp is 575 ± 14 Bq/kg (Pacific) and 443 ± 10 Bq/kg (Gulf), while the activity for sea bass is 753 ± 18Bq/kg (Pacific) and 502 ± 14Bq/kg (Gulf). Similarly, the measured concentration of ^(208)Tl for shrimp and sea bass is 0.75 ± 0.03 and 1.09 ± 0.05 Bq/kg (Pacific), respectively, and 0.51 ± 0.02 and 0.85 ± 0.04Bq/kg (Gulf), respectively. No other natural radionuclides or radiation contaminants were observed with significant activity. This is the first comparison of radioactivity concentration in fish and shellfish between the two main Mexican marine ecosystems.


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