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<p>Toxic polonium-210 (<sup>210</sup>Po) in freshwater fish poses significant health risks to humans when consumed, as well as fish populations and other aquatic organisms. Alpha spectrometry was employed to determine 210Po activity concentrations in the organs from two omnivorous fish species, <i>Cyprinus carpio</i> and <i>Squaliobarbus curriculus</i>, collected from the Red River system across Lao Cai, Phu Tho, and Thai Binh provinces in northern Vietnam. Results revealed an uneven <sup>210</sup>Po distribution between organs, with the lowest levels in muscle and the highest in the intestines and stomach, suggesting that digestion is a primary pathway for <sup>210</sup>Po accumulation. The <i>C. carpio</i> exhibited higher <sup>210</sup>Po activity concentrations across most organs compared to <i>S. curriculus</i>. Spatially, <sup>210</sup>Po activity varied by location, with the predominance of <sup>210</sup>Po activity in most organs of <i>C. carpio</i> in Thai Binh and <i>S. curriculus</i> in Phu Tho. These differences underscore the influence of behavior, physiology, and environmental conditions on <sup>210</sup>Po distribution between the two target species. The annual committed effective dose (ED) due to consuming these fish was within the allowable limits for muscle tissue. However, the ED exceeds the safe limited value when consuming digestive organs such as the stomach and intestine, suggesting that eating these parts should be avoided to mitigate health risk. Estimated radiation dose rates from <sup>210</sup>Po to these two freshwater species showed minimal expected radiation impact in the study area based on freshwater.</p>

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Distribution and risk assessments of 210Po in the body organs of common carp (Cyprinus carpio) and Barbel Chub (Squaliobarbus curriculus) within Red River, Vietnam

  • 期刊论文

  • 发表日期：

    2025年12月5日

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  • Trung-Tien Chu,
  • Van-Hao Duong,
  • Thanh-Xuan Pham-Thi,
  • Munawar Suhail Ahmed,
  • Mohamed Saiyad Musthafa,
  • Thanh-Duong Van,
  • Xuan-Huan Nguyen,
  • Trung-Thanh Tran,
  • Thuy-Anh Tran-Thi,
  • Van-Luc Nguyen,
  • Hong Nguyen-Thi,
  • Nga Phung-Thi,
  • Thanh-Nam Nguyen

摘要

Toxic polonium-210 (210Po) in freshwater fish poses significant health risks to humans when consumed, as well as fish populations and other aquatic organisms. Alpha spectrometry was employed to determine 210Po activity concentrations in the organs from two omnivorous fish species, Cyprinus carpio and Squaliobarbus curriculus, collected from the Red River system across Lao Cai, Phu Tho, and Thai Binh provinces in northern Vietnam. Results revealed an uneven 210Po distribution between organs, with the lowest levels in muscle and the highest in the intestines and stomach, suggesting that digestion is a primary pathway for 210Po accumulation. The C. carpio exhibited higher 210Po activity concentrations across most organs compared to S. curriculus. Spatially, 210Po activity varied by location, with the predominance of 210Po activity in most organs of C. carpio in Thai Binh and S. curriculus in Phu Tho. These differences underscore the influence of behavior, physiology, and environmental conditions on 210Po distribution between the two target species. The annual committed effective dose (ED) due to consuming these fish was within the allowable limits for muscle tissue. However, the ED exceeds the safe limited value when consuming digestive organs such as the stomach and intestine, suggesting that eating these parts should be avoided to mitigate health risk. Estimated radiation dose rates from 210Po to these two freshwater species showed minimal expected radiation impact in the study area based on freshwater.