An overlooked pool of hydrogen stored in humic matter revealed by isotopic exchange: implication for radioactive 3H contamination

Radioactive compounds are released in the environment by several anthropogenic activities, however, studies reveal that naturally occurring radioactive materials are responsible for over 80% of human exposure to ionizing radiation. Reports suggest that there are severe health risks associated with exposure to elevated concentrations of radioactive materials, such as potassium ( 40 K), uranium ( 238 U and 235 U), and thorium ( 232 Th). The rarity of comprehensive reviews addressing the occurrence, risk assessment, and potential remediation strategies of radioactive pollution in Nigerian environments propelled the collection of data over the last decade. Concentration as high as 2.42 ± 0.28 Bq/L has been reported in rivers in Nigeria, much higher than the radionuclide permissible level of 1 Bq/L. There are emerging concerns as activity concentrations of gamma-emitting radioactive materials found in soils are higher than worldwide average crustal values based on several reports. In many cases, the absorbed air dose rates were also greater (i.e., 86.44 nGy hr -1 ) than acceptable limits (60 nGy hr -1 ) except for few study areas. The level of radionuclides reported is indicative of the type of parent rocks and mineral composition of the studied area. Advances in remediation technologies suggest that electroremediation, bioremediation, and adsorption are the most efficient remedial approach for decontamination of radiochemical polluted sites. There is a need to explore an integrated synergistic approach for sustainable remediation of heavily polluted sites and in the light of environmental protection, attention must be given to areas with high levels of radioactive pollution. This review seeks to bridge information gaps towards ensuring that radioactive materials do not destroy our ecosystem.

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Occurrence and remediation of naturally occurring radioactive materials in Nigeria: a review

Adebiyi

Ore

Adeola

et al. 2021

Environ Chem Lett

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Experimental investigation of D2 conversion to DHO in soil near the Cernavoda nuclear power plant site in Romania

Kim

Bredlaw

Festarini

et al. 2021

Applied Radiation and Isotopes

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Tritium behavior in soil and mineral rock components used for plant cultivation

Portuphy,

Katayama,

Asao

et al. 2024

Applied Radiation and Isotopes

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An overlooked pool of hydrogen stored in humic matter revealed by isotopic exchange: implication for radioactive 3H contamination

Cited by 6 publications

References 34 publications

Occurrence and remediation of naturally occurring radioactive materials in Nigeria: a review

Occurrence and remediation of naturally occurring radioactive materials in Nigeria: a review

Experimental investigation of D2 conversion to DHO in soil near the Cernavoda nuclear power plant site in Romania

Tritium behavior in soil and mineral rock components used for plant cultivation

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