Radionuclide concentration processes in marine organisms: A comprehensive review

Area of Science:

• Environmental science
• Marine biology
• Radiochemistry

Background:

• Early studies revealed artificial radionuclides accumulate in marine life.
• Concentration factors (CFs) were developed to quantify radionuclide accumulation relative to seawater concentrations.

Purpose of the Study:

• To review radionuclide concentration processes in marine organisms.
• To present updated concentration factor values for key radionuclide groups.

Main Methods:

• Review of existing literature on radionuclide bioconcentration.
• Compilation and commentary on concentration factor data for various radionuclides.
• Consideration of environmental factors influencing radionuclide biokinetics.

Main Results:

• Concentration factors are a valuable tool for assessing radionuclide accumulation in marine biota.
• CFs aid in modeling radionuclide distribution and predicting radioactivity levels.
• Periodic revisions by organizations like the IAEA ensure updated information availability.

Conclusions:

• Concentration factors remain a practical method for describing radionuclide and stable isotope accumulation in aquatic organisms.
• Understanding these processes is vital for marine environmental safety and management.