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Violeta Hansen

210Po and 210Pb activity concentrations in Greenlandic seabirds and dose assessment

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210Po and 210Pb activity concentrations in Greenlandic seabirds and dose assessment. / Hansen, Violeta; Mosbech, Anders; Søgaard-Hansen, Jens ; Riget, Frank Farsø; Merkel, Flemming Ravn; Linnebjerg, Jannie Fries; Schulz, Ralf ; Zubrod, Jochen P. ; Eulaers, Igor; Asmund, Gert.

I: Science of the Total Environment, Bind 712, 136548, 04.2020.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

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@article{0679e3af678443298890859eb62114ae,
title = "210Po and 210Pb activity concentrations in Greenlandic seabirds and dose assessment",
abstract = "Naturally occurring radionuclides, in particular, polonium-210 (210Po), have a greater contribution than anthropogenic radionuclides to the annual effective dose received by the general public due to consumption of seafood. Knowledge of potential trophic sources and transfer of 210Po to seabird species and subsequently to the Greenlandic people is, however, still poor. Here, we assess the transfer of 210Po and 210Pb to seabirds sampled during autumn and winter 2017 and 2018 in Greenland and provide a dose assessment. The activity concentrations of 210Po in muscle and liver, respectively, ranged from 0.2 ± 0.1 Bq kg−1 w.w. in glaucous gull (Larus hyperboreus) to 21.2 ± 22.6 Bq kg−1 w.w. in thick-billed murre (Uria lomvia) and from 32.0 ± 9.4 Bq kg−1 w.w. in common eider (Somateria mollissima) to 40.5 ± 49.0 Bq kg−1 w.w. in thick-billed murre. 210Po was non-uniformly distributed in the body of thick-billed murre. Kidneys and feathers showed higher 210Po activity concentrations than heart and bone. The 210Po/210Pb activity concentration ratios are higher than unity, indicating that 210Po is preferentially taken up by seabirds compared to its progenitor 210Pb. The derived annual absorbed dose from 210Po to the whole body of thick-billed murre was 6.4 × 102 ± 3.0 × 102 μGy. The annual effective dose to the average adult and representative person in Greenland due to ingestion of 210Po in seabirds was estimated to 13.0 μSv and 57.0 μSv, respectively. This derived dose is low and poses a slight risk, and risk communication is therefore deemed unnecessary.",
keywords = "Polonium, Lead, Trophic position, Absorbed dose, Effective dose, Arctic, Absorbed dose, Lead, Polonium, Trophic position, Effective dose, Arctic",
author = "Violeta Hansen and Anders Mosbech and Jens S{\o}gaard-Hansen and Riget, {Frank Fars{\o}} and Merkel, {Flemming Ravn} and Linnebjerg, {Jannie Fries} and Ralf Schulz and Zubrod, {Jochen P.} and Igor Eulaers and Gert Asmund",
year = "2020",
month = apr,
doi = "10.1016/j.scitotenv.2020.136548",
language = "English",
volume = "712",
journal = "Science of the Total Environment",
issn = "0048-9697",
publisher = "Elsevier BV",

}

RIS

TY - JOUR

T1 - 210Po and 210Pb activity concentrations in Greenlandic seabirds and dose assessment

AU - Hansen, Violeta

AU - Mosbech, Anders

AU - Søgaard-Hansen, Jens

AU - Riget, Frank Farsø

AU - Merkel, Flemming Ravn

AU - Linnebjerg, Jannie Fries

AU - Schulz, Ralf

AU - Zubrod, Jochen P.

AU - Eulaers, Igor

AU - Asmund, Gert

PY - 2020/4

Y1 - 2020/4

N2 - Naturally occurring radionuclides, in particular, polonium-210 (210Po), have a greater contribution than anthropogenic radionuclides to the annual effective dose received by the general public due to consumption of seafood. Knowledge of potential trophic sources and transfer of 210Po to seabird species and subsequently to the Greenlandic people is, however, still poor. Here, we assess the transfer of 210Po and 210Pb to seabirds sampled during autumn and winter 2017 and 2018 in Greenland and provide a dose assessment. The activity concentrations of 210Po in muscle and liver, respectively, ranged from 0.2 ± 0.1 Bq kg−1 w.w. in glaucous gull (Larus hyperboreus) to 21.2 ± 22.6 Bq kg−1 w.w. in thick-billed murre (Uria lomvia) and from 32.0 ± 9.4 Bq kg−1 w.w. in common eider (Somateria mollissima) to 40.5 ± 49.0 Bq kg−1 w.w. in thick-billed murre. 210Po was non-uniformly distributed in the body of thick-billed murre. Kidneys and feathers showed higher 210Po activity concentrations than heart and bone. The 210Po/210Pb activity concentration ratios are higher than unity, indicating that 210Po is preferentially taken up by seabirds compared to its progenitor 210Pb. The derived annual absorbed dose from 210Po to the whole body of thick-billed murre was 6.4 × 102 ± 3.0 × 102 μGy. The annual effective dose to the average adult and representative person in Greenland due to ingestion of 210Po in seabirds was estimated to 13.0 μSv and 57.0 μSv, respectively. This derived dose is low and poses a slight risk, and risk communication is therefore deemed unnecessary.

AB - Naturally occurring radionuclides, in particular, polonium-210 (210Po), have a greater contribution than anthropogenic radionuclides to the annual effective dose received by the general public due to consumption of seafood. Knowledge of potential trophic sources and transfer of 210Po to seabird species and subsequently to the Greenlandic people is, however, still poor. Here, we assess the transfer of 210Po and 210Pb to seabirds sampled during autumn and winter 2017 and 2018 in Greenland and provide a dose assessment. The activity concentrations of 210Po in muscle and liver, respectively, ranged from 0.2 ± 0.1 Bq kg−1 w.w. in glaucous gull (Larus hyperboreus) to 21.2 ± 22.6 Bq kg−1 w.w. in thick-billed murre (Uria lomvia) and from 32.0 ± 9.4 Bq kg−1 w.w. in common eider (Somateria mollissima) to 40.5 ± 49.0 Bq kg−1 w.w. in thick-billed murre. 210Po was non-uniformly distributed in the body of thick-billed murre. Kidneys and feathers showed higher 210Po activity concentrations than heart and bone. The 210Po/210Pb activity concentration ratios are higher than unity, indicating that 210Po is preferentially taken up by seabirds compared to its progenitor 210Pb. The derived annual absorbed dose from 210Po to the whole body of thick-billed murre was 6.4 × 102 ± 3.0 × 102 μGy. The annual effective dose to the average adult and representative person in Greenland due to ingestion of 210Po in seabirds was estimated to 13.0 μSv and 57.0 μSv, respectively. This derived dose is low and poses a slight risk, and risk communication is therefore deemed unnecessary.

KW - Polonium, Lead, Trophic position, Absorbed dose, Effective dose, Arctic

KW - Absorbed dose

KW - Lead

KW - Polonium

KW - Trophic position

KW - Effective dose

KW - Arctic

U2 - 10.1016/j.scitotenv.2020.136548

DO - 10.1016/j.scitotenv.2020.136548

M3 - Journal article

C2 - 31927443

VL - 712

JO - Science of the Total Environment

JF - Science of the Total Environment

SN - 0048-9697

M1 - 136548

ER -