Modern approaches to the determination of organically bound tritium in environmental media and biological tissues

   The prolonged discharge of tritium-containing water from the Fukushima Daiichi Nuclear Power Plant into the Pacific Ocean leads to the gradual transport of tritium into Russian fishing zones and its accumulation in marine products. Tritium is incorporated into organic compounds, including seafood. Upon consumption of these seafood products, dose coefficients for organically bound tritium forms exceed those for tritiated water forms. Monitoring of organically bound tritium constitutes a critical component of radiological surveillance and the assessment of internal exposure doses.

   The purpose of this communication is to summarize current approaches to determining organically bound tritium in environmental media and biological tissues.

   Based on an analysis of scientific publications, this communication provides brief information on established and currently used methods for preparing counting samples to measure the content of organic tritium compounds in environmental media and biological tissues.

   Conclusion: Modern methods for determining organically bound tritium provide reliable data but are complex and require standardization. Promising directions for determining organically bound tritium content include improving sample preparation, enhancing the efficiency of converting organically bound tritium into a measurable form, implementing more sensitive analytical methods, and developing a metrological assurance system.

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