Alpha and gamma radioactivity in Fucus vesiculosus from the Irish sea

Thompson, Neil; Cross, J E; Miller, Robert Morton Tara; Day, John

doi:10.1016/0143-148x(82)90039-8

Cited by 9 publications

(4 citation statements)

References 9 publications

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“…The variability in the 40 K and 210 Po levels for brown macroalgae (Table 1) is not unusual (Thompson et al, 1982;Ugur et al, 2002;Goddard and Jupp, 2001). Thompson et al (1982) showed that for just one species of a brown macroalgae, Fucus vesiculosus, collected from the Irish Sea, 40 K concentrations varied twofold. Another study showed that 40 K concentrations can vary within algal divisions (Goddard and Jupp, 2001).…”

Section: K 210 Pb and 210 Po In Macroalgae And Musselsmentioning

confidence: 89%

Natural and Fukushima-derived radioactivity in macroalgae and mussels along the Japanese shoreline

Baumann¹,

Casacuberta²,

Baumann³

et al. 2013

Preprint

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Following the failure of the nuclear power plant in Fukushima Prefecture in March 2011, peer-reviewed publications describing radioactivity levels in organisms inhabiting coastal environments are scarce. This paper reports on elevated levels of 134Cs and 137Cs in macroalgae and mussels (up to ~ 800 Bq kg−1 dry wt.) in June 2011. Cs concentrations in biota sampled in early June 2011 were higher in areas south of Fukushima than sampled in the last third of the month north of Fukushima. Radioactivity from 134+137Cs in organisms south of Fukushima were comparable to or lower than that from the naturally occuring 40K in the same samples. While 210Pb and 210Po concentrations were generally lower than these other radionuclides, 210Po as an α-emitter is more significant from a radiological viewpoint than γ-emitters as it can inflict greater biological damage. By applying known bioconcentration factors of Cs in biota, measured biota concentrations of Cs were also used to estimate Cs concentraitons in coastal seawater to be in the range of 102–103 Bq m−3. These estimates show that 3 months after the accident and maximal release of radioactive Cs, levels of Cs persisted in coastal waters, although at levels that were two orders of magnitude lower than at the time of release. These June coastal seawater Cs levels were four orders of magnitude above Cs concentrations off Japan prior to the Fukushima disaster

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Section: K 210 Pb and 210 Po In Macroalgae And Musselsmentioning

confidence: 89%

Natural and Fukushima-derived radioactivity in macroalgae and mussels along the Japanese shoreline

Baumann¹,

Casacuberta²,

Baumann³

et al. 2013

Preprint

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show abstract

“…Marine algae have been extensively used as bioindicators for radionuclides or trace metals. [5][6][7][8][9] The results in this study showed the wakame seaweed had different character in incorporation between 90 Sr and 137 Cs. The concentration of 90 Sr in wakame 2.…”

Section: Discussionmentioning

confidence: 99%

“…Marine algae have been extensively used as bioindicators for radionuclide or trace metal pollution, since marine algae have the ability to concentrate very low levels of radionuclides or trace metals in seawater. [5][6][7][8][9] In particular, brown alga has been frequently used for the survey of radioiodine because the species is capable of concentrating iodine to a high concentration. 7,10,11 Wakame seaweed Undaria pinnatifida, which is a species of brown alga, widely inhabits the coastal areas of southern and central Japan and is frequently consumed as food.…”

Section: Introductionmentioning

confidence: 99%

Temporal variations of 90Sr and 137Cs concentrations and the 137Cs/90Sr activity ratio in marine brown algae, Undaria pinnatifida and Laminaria longissima, collected in coastal areas of Japan

et al. 2010

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The anthropogenic radionuclides, 90Sr and 137Cs, were measured in two marine algal species, wakame seaweed (Undaria pinnatifida) and edible kelp (Laminaria longissima), collected in four coastal areas of Japan during 1998-2008. Although 90Sr and 137Cs could be detected at all sampling sites, the concentrations of 90Sr and 137Cs were at low levels and those in some samples were below the detection limit. These low concentrations and the small variation of both concentrations and the 137Cs/90Sr activity ratio indicate that the source of 90Sr and 137Cs detected in this study originated from the global fallout deposition following atmospheric nuclear-bomb tests in the past. There were no significant differences in both concentrations of 90Sr and 137Cs in wakame seaweed among three sampling sites. Although wakame seaweed is extensively distributed in southern and central Japan, it does not occur in northern areas and so edible kelp was monitored. The concentrations of 90Sr and 137Cs in edible kelp were significantly different from those in wakame seaweed in some sampling sites. These differences could be due to the difference in the concentrations of 90Sr and 137Cs in the surrounding seawater or the difference in species. The combined data with data from the previous report and the preexisting database showed that wakame seaweed incorporated 137Cs through a different pathway from that of 90Sr. The combined data also suggested that wakame seaweed responded differently to the source of 137Cs.

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Section: K 210mentioning

confidence: 91%

Natural and Fukushima-derived radioactivity in macroalgae and mussels along the Japanese shoreline

et al. 2013

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Following the failure of the nuclear power plant in Fukushima Prefecture in March 2011, peer-reviewed publications describing radioactivity levels in organisms inhabiting coastal environments are scarce. This paper reports on elevated levels of ¹³⁴Cs and ¹³⁷Cs in macroalgae and mussels (up to ~ 800 Bq kg⁻¹ dry wt.) in June 2011. Cs concentrations in biota sampled in early June 2011 were higher in areas south of Fukushima than sampled in the last third of the month north of Fukushima. Activity concentrations from ^134+137Cs in organisms south of Fukushima were comparable to or lower than those from the naturally occurring ⁴⁰K in the same samples. While ²¹⁰Pb and ²¹⁰Po concentrations were generally lower than these other radionuclides, ²¹⁰Po as an α-emitter is more significant from a radiological viewpoint than γ-emitters as it can inflict greater biological damage. By applying known bioconcentration factors of Cs in biota, measured biota concentrations of Cs were also used to estimate Cs concentrations in coastal seawater to be in the range of 10²–10³ Bq m⁻³. These estimates show that, 3 months after the accident and maximal release of radioactive Cs, levels of Cs persisted in coastal waters, although at levels that were two orders of magnitude lower than at the time of release. These June coastal seawater Cs levels were four orders of magnitude above Cs concentrations off Japan prior to the Fukushima disaster

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Alpha and gamma radioactivity in Fucus vesiculosus from the Irish sea

Cited by 9 publications

References 9 publications

Natural and Fukushima-derived radioactivity in macroalgae and mussels along the Japanese shoreline

Natural and Fukushima-derived radioactivity in macroalgae and mussels along the Japanese shoreline

Temporal variations of 90Sr and 137Cs concentrations and the 137Cs/90Sr activity ratio in marine brown algae, Undaria pinnatifida and Laminaria longissima, collected in coastal areas of Japan

Natural and Fukushima-derived radioactivity in macroalgae and mussels along the Japanese shoreline

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