Natural Radionuclides in the UK Marine Environment

Rollo, S.F.N.; Camplin, W.C.; Allington, D.J.; Young, A.K.

doi:10.1093/rpd/45.1-4.203

Cited by 12 publications

(3 citation statements)

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“…A significant proportion of the reported data (table C.2) for the RAP crab are for the species Cancer pagerus (edible or brown crab). There are numerous studies reporting activity concentrations of 210 Po and 210 Pb in marine crabs (Young et al 2002, Al-Masri et al 2000a, 2000b, Heyraud and Cherry 1979, Rollo et al 1992, Swift et al 1994, Othman et al 1994, Pentreath and Allington 1988. The data coverage for these radionuclides might therefore be considered to be satisfactory.…”

Section: Activity Concentrations In Marine Rapsmentioning

confidence: 99%

Background dose-rates to reference animals and plants arising from exposure to naturally occurring radionuclides in aquatic environments

et al. 2010

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In order to put dose-rates derived in environmental impact assessments into context, the International Commission on Radiological Protection (ICRP) has recommended the structuring of effects data according to background exposure levels. The ICRP has also recommended a suite of reference animals and plants (RAPs), including seven aquatic organisms, for use within their developing framework. In light of these propositions, the objective of this work was to collate information on activity concentrations of naturally occurring primordial radionuclides for marine and freshwater ecosystems and apply appropriate dosimetry models to derive absorbed dose-rates. Although coverage of activity concentration data is comprehensive for sediment and water, few, or in some cases no, data were found for some RAPs, e.g. for frogs (Ranidae) and freshwater grasses (Poaceae) for most radionuclides. The activity concentrations for individual radionuclides in both organisms and their habitat often exhibit standard deviations that are substantially greater than arithmetic mean values, reflecting large variability in activity concentrations. To take account of variability a probabilistic approach was adopted. The dominating radionuclides contributing to exposure in the RAPs are (40)K, (210)Po and (226)Ra. The mean unweighted and weighted dose-rates for aquatic RAPs are in the ranges 0.07-0.39 microGy h(-1) and 0.37-1.9 microGy h(-1) respectively.

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Section: Activity Concentrations In Marine Rapsmentioning

confidence: 99%

Background dose-rates to reference animals and plants arising from exposure to naturally occurring radionuclides in aquatic environments

et al. 2010

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“…Operational methods of speciation such as duction is widely reported. [23][24][25][26][27][28][29][30] The source of this enhancement sequential extraction are therefore used to indicate the fraction is sedimentary phosphate ore, which contains significant conof the total metal content which is potentially labile under centrations of uranium, together with radiologically important various environmental conditions. Many different sequential daughter nuclides such as 226Ra, 210Pb and 210Po.…”

mentioning

confidence: 99%

Operational speciation of uranium in inter-tidal sediments from the vicinity of a phosphoric acid plant by means of the BCR sequential extraction procedure and ICP-MS

Howe¹,

Davidson

McCartney³

1999

J. Anal. At. Spectrom.

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A method has been developed for the determination of uranium in sediment digests and sequential extracts by ICP-MS. No interferences were found due to the presence of the extractant matrices (0.11 mol l(-1) acetic acid, 0.1 mol l(-1) hydroxylammonium chloride, 1.0 mol l(-1) ammonium acetate and 30% v/v aqua regia) provided U-236 was used as internal standard and the samples were diluted 5-fold with 5% v/v nitric acid prior to analysis. Detection limits (8 ng g(-1) for extracts and 20 ng g(-1) for digests) were adequate for determination of uranium at environmental levels. Results obtained by ICP-MS for aqua regia digests were slightly lower than those obtained by alpha spectrometry, but overall recoveries of uranium by sequential extraction were generally within +/- 10% of pseudototal values. Application of the developed method to inter-tidal sediments collected from the vicinity of the Albright and Wilson phosphoric acid plant, Whitehaven, Cumbria, confirmed the presence of significant technological enhancement of uranium at Whitehaven Harbour but showed that concentrations had decreased since the plant discontinued phosphate ore processing in 1992. Results of the sequential extraction suggested that spillage of phosphate ore (containing up to 120 mu g g(-1) uranium) during shipping may have made a significant contribution to the environmental contamination observed

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“…The processing of this ore resulted in a liquid waste slurry (phosphogypsum) that contained enhanced amounts of thorium-232, uranium-238 and their respective radioactive decay products. This slurry was directly discharged to Saltom Bay via a pipeline and these discharges led to significantly increased concentrations of naturally occurring radionuclides in local shellfish and hence doses to local seafood consumers (Rollo et al 1992, Camplin et al 1996, Pollard et al 1998. In 1992, the plant switched from processing raw phosphate ore to crude phosphoric acid and commissioned a raffinate treatment plant as described in Poole et al (1995).…”

Section: Norm From Industrial Discharges Near Whitehavenmentioning

confidence: 99%

25 years of RIFE—a brief history and highlights

Dewar¹,

Molin²,

Clyne³

et al. 2021

J. Radiol. Prot.

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In 2020, the UK environmental regulators and food safety agencies, published the 25th edition of the Radioactivity in Food and the Environment (RIFE) report. This marks a quarter of a century since the landmark RIFE report was first published by the Ministry of Agriculture, Fisheries and Food in 1996, which represented the first joint monitoring and assessment report for the United Kingdom. This paper provides a summary of the RIFE report, how it has evolved and presents some case studies from over the 25 year period.

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Natural Radionuclides in the UK Marine Environment

Cited by 12 publications

References 0 publications

Background dose-rates to reference animals and plants arising from exposure to naturally occurring radionuclides in aquatic environments

Background dose-rates to reference animals and plants arising from exposure to naturally occurring radionuclides in aquatic environments

Operational speciation of uranium in inter-tidal sediments from the vicinity of a phosphoric acid plant by means of the BCR sequential extraction procedure and ICP-MS

25 years of RIFE—a brief history and highlights

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