Isotopic double tracers for the measurement of the biological half-life of an element or compound, exemplified by 125I131I taken up in a seaweed

Nozaki, Tadashi; Saito, J.

doi:10.1016/0969-8043(95)00224-2

Cited by 4 publications

(1 citation statement)

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“…The biological half-life of radioiodine in several brown alga have been reported between 5 and 23 days (Druehl et al, 1988). The biological half-life of radioiodine in Ulva pertusa is reported in Nozaki and Saito (1995) as varying between 1.5 and 4.1 days depending on the part of the algae frond. On this basis 131I levels in Ulva sp.…”

Section: Uptake Of 131 I By Algaementioning

confidence: 99%

Dose assessment for marine biota and humans from discharge of 131I to the marine environment and uptake by algae in Sydney, Australia

Veliscek-Carolan

Hughes

Hoffmann

2011

Journal of Environmental Radioactivity

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Iodine-131 reaches the marine environment through its excretion to the sewer by nuclear medicine patients followed by discharge through coastal and deepwater out falls. 131I has been detected in macroalgae,which bio-accumulate iodine, growing near the coastal out fall of Cronulla sewage treatment plant (STP) since 1995. During this study, (131)I levels in liquid effluent and sludge from three Sydney STP's as well as in macroalgae (Ulva sp. and Ecklonia radiata) growing near their shoreline out falls were measured. Concentration factors of 176 for Ulva sp. and 526 for E. radiata were derived. Radiation dose rates to marine biota from (131)I discharged to coastal waters calculated using the ERICA dose assessment tool were below the ERICA screening level of 10 μGy/hr. Radiation dose rates to humans from immersion in seawater or consumption of Ulva sp. containing (131)I were three and two orders of magnitude below the IAEA screening level of 10 μSv/year, respectively.

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Section: Uptake Of 131 I By Algaementioning

confidence: 99%