A comparison of doses from 137Cs and 210Po in marine food: A major international study

Aarkrog, A.; Baxter, M.S.; Bettencourt, A.O. de; Bojanowski, R.; Bologa, Alexandru S.; Charmasson, Sabine; Cunha, I. I. L.; Delfanti, Roberta; Duran, E.B.; Holm, E.; Jeffree, Ross A.; Livingston, Hugh D.; Mahapanyawong, S.; Nies, H.; Osvath, I.; Pingyu, Li; Povinec, P.; Sanchez, Anthony; Smith, J. N.; Swift, D. J.

doi:10.1016/0265-931x(96)00005-7

Cited by 179 publications

(80 citation statements)

References 4 publications

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“…The data in Table 3 also imply that even the dose rate received from Chernobyl-derived 137 Cs in BS cod (0.88 µSv yr −1 ) is nearly 100-fold larger than that of the Fukushima contribution. Within a dose assessment for consumption of sea fish (Aarkrog et al, 1997), a 210 Po value in fish of 2.4 Bq kg −1 was used which, taking the meanwhile larger ICRP dose conversion coefficient into account, would result in a dose rate of 29 µSv yr −1 for consuming 10 kg per year .…”

Section: Dose Considerations About the Fukushima Contributionmentioning

confidence: 99%

Does the Fukushima NPP disaster affect the caesium activity of North Atlantic Ocean fish?

Kanisch¹,

Aust²

2013

Biogeosciences

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Fillet samples of marine fish collected from the East/West Greenland currents (GC) and from the Baltic Sea (BS) have been investigated by gamma-ray spectrometry within the regular German monitoring programme. In samples of the second half of 2011, ¹³⁴Cs traces have been detected that are suggested to originate from the Fukushima fallout that was deposited in March/April 2011 over the northern North Atlantic and accumulated by fish. The radionuclide ¹³⁴Cs (half-life 2 yr) was indeed detected with quite small activities at about 0.0036 Bq kg⁻¹ w.w. Existing box models describing the transport of Cs within seawater boxes of the northeast Atlantic allowed for estimation of ¹³⁴Cs contributions from other sources, i.e. from the Chernobyl fallout and from discharges by the two major European nuclear reprocessing plants; both were negligible around Greenland, while for the Chernobyl fallout a small ¹³⁴Cs background contribution to BS fish was estimated. Model results confirmed the level of ¹³⁴C measured in BS fish and showed its maximum to have occurred in winter 2011/2012 followed by a continuous decrease. It was also determined that ¹³⁴Cs activity, but not that of ¹³⁴Cs, showed a significant negative correlation with sampling depth (150–400 m) of GC fish; this strengthens our Fukushima fallout assumption. As a result, the Fukushima fallout in these sea areas only marginally enhanced (GC: 4%; BS: 0.1%) pre-Fukushima levels of individual dose rates received by human fish consumers; the addition was around 0.001 μSv following the consumption of 10 kg of fish per year, which is not expected to cause concern according to present guidelines for radiation protection

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Section: Dose Considerations About the Fukushima Contributionmentioning

confidence: 99%

Does the Fukushima NPP disaster affect the caesium activity of North Atlantic Ocean fish?

Kanisch¹,

Aust²

2013

Biogeosciences

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“…137 Cs was pre-concentrated with ammonium molybdophosphate (AMP) from 30 l of seawater [6]. The samples were subjected to low-level hyper pure germanium gamma spectrometry (HpGe) for 50, 000 s. On the other hand, 210 Po in seawater was determined by pre-concentration using Fe(OH) 3 followed by silver plating [7]. The solution, after plating, was stored for 6 months in glass bottles to allow the ingrowth of 210 Po from its grandparent, 210 Pb.…”

Section: Radionuclide Determinationmentioning

confidence: 99%

“…Naturally occurring U and Th series radionuclides, singly occurring 40 K and fallout 137 Cs in marine ecosystem have attracted special interest due to their chemical and radioactive properties. The naturally occurring radionuclides, 238 U, 208 Tl, 226 Ra, 210 Po, 210 Pb and 40 K, and fallout 137 Cs are important contributors to radiation dose received by human beings via seafood consumption, because of their high accumulation rates in the edible parts (especially 210 Po) of marine organism [3,4]. Data pertaining to the above-mentioned radionuclides remain scanty in the southern coastal regions of India, one of the high background radiation areas (HBRA) of the world.…”

Section: Introductionmentioning

confidence: 99%

Radionuclides in south Indian seafoods: A special focus on major contributing species

Wesley¹,

Khan²

2011

Radioprotection

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Abstract. Concentrations of natural radionuclides 238 U, 208 Tl ( 232 Th), 226 Ra, 210 Po, 210 Pb and 40 K, and fallout 137 Cs were determined in pelagic and demersal fishes which are of economic importance. Pelagic fishes concentrated more radionuclides in the muscle tissue when compared to benthic species. Similarly, teleosts registered more activity than elasmobranchs. Based on the activity levels in muscle, the intake, effective dose and lifetime risks to humans were estimated. The internal radiation doses received by fishes and human beings seem to be mainly due to 210 Po and 40 K. The fishes were found to be safe for consumption.

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“…210 Po is the dominant contributor to natural radiation doses received by marine biota [1][2][3][4] and one of natural tracers used in studies of marine biogeochemical processes [5][6][7][8]. Up to mid-1990s a very limited amount of data on 210 Po in the Black Sea water, sediments and biota had been published [4,9,10]. This work initiated by the IAEA Technical Co-operative Project RER/2/003 "Marine Environmental Assessment in the Black Sea Region" presents an extensive set of 210 Po data and related results obtained by authors in 1999-2006.…”

Section: Introductionmentioning

confidence: 99%

²¹⁰Po accumulation by components of the Black Sea ecosystem

2009

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Abstract. The naturally occurring radionuclide 210 Po was determined in different components of the Black Sea ecosystem. The specific activity of 210 Po in water in the open part of the sea was about 1 Bq · m −3 . The range of 210 Po specific activity in bottom sediments was 4.5-500 Bq · kg −1 dry weight depending on their type, area and depth of collection. The highest values were found in the NW part of the Black Sea. Sediment distribution coefficients (Kd) of 210 Po for bottom sediments, calculated on a dry weight basis, varied from 0.5 × 10 4 to 5 × 10 5 . The levels of 210 Po specific activity in molluscs and pelagic fishes anchovy and sprat were the highest among the investigated species of the Black Sea biota. Concentration factors (CF) of 210 Po, estimated on a wet weight basis, reached 1.5 × 10 3 for macrophytes, 4 × 10 3 for total zooplankton, 10 3 -10 4 for the entire fishes depending on their ecological groups affiliation and (0.7-6.0) × 10 4 for molluscs. So, the ability of the Black Sea biota to accumulate the natural radionuclide 210 Po is comparable with that of similar species from others marine and oceanic areas.

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A comparison of doses from 137Cs and 210Po in marine food: A major international study

Cited by 179 publications

References 4 publications

Does the Fukushima NPP disaster affect the caesium activity of North Atlantic Ocean fish?

Does the Fukushima NPP disaster affect the caesium activity of North Atlantic Ocean fish?

Radionuclides in south Indian seafoods: A special focus on major contributing species

²¹⁰Po accumulation by components of the Black Sea ecosystem

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A comparison of doses from 137Cs and 210Po in marine food: A major international study

Cited by 179 publications

References 4 publications

Does the Fukushima NPP disaster affect the caesium activity of North Atlantic Ocean fish?

Does the Fukushima NPP disaster affect the caesium activity of North Atlantic Ocean fish?

Radionuclides in south Indian seafoods: A special focus on major contributing species

210Po accumulation by components of the Black Sea ecosystem

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Product

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About

²¹⁰Po accumulation by components of the Black Sea ecosystem