PMID: 9656190Jul 10, 1998Paper

Transfer across the human gut of environmental plutonium, americium, cobalt, caesium and technetium: studies with cockles (Cerastoderma edule) from the Irish Sea

Journal of Radiological Protection : Official Journal of the Society for Radiological Protection
G J Hunt

Abstract

Our previous studies have indicated lower values of the gut transfer factor ('f1 values') for plutonium and americium in winkles (Littorina littorea) than adopted by ICRP. The present study was undertaken primarily to investigate whether this observation extends to other species. Samples of cockles (Carastoderma edule) from Ravenglass, Cumbria were eaten by volunteers who provided 24 h samples of urine and faeces. Urine samples indicated f1 values for cockles which were higher than for winkles; for plutonium these ranged overall up to 7 x 10(-4) with an arithmetic mean in the range (2-3) x 10(-4), and for americium up to 2.6 x 10(-4) with an arithmetic mean of 1.2 x 10(-4). Limited data based on volunteers eating cockles from the Solway suggest that f1 values for americium may be greater at distance from Sellafield. The measured values compare with 5 x 10(-4) used by the ICRP for environmental forms of both elements, which would appear to provide adequate protection when calculating doses from Cumbrian cockles. Data for other nuclides were obtained by analysing faecal samples from the volunteers who ate the Ravenglass cockles. Cobalt-60 showed an f1 value in the region of 0.2, twice the value currently used by ICRP. For 137Cs, ...Continue Reading

References

Apr 1, 1992·Health Physics·R W Leggett
Jun 1, 1991·Health Physics·D S PopplewellG J Ham
Jan 1, 1990·The Science of the Total Environment·G J HuntM B Lovett
Aug 1, 1986·The Science of the Total Environment·G J HuntM B Lovett
Oct 1, 1966·Health Physics·T M BeasleyW B Nelp
Jul 1, 1993·Health Physics·R J TalbotA J Warner

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Citations

Apr 19, 2011·Radiation Protection Dosimetry·M Puncher, J D Harrison
May 13, 2008·International Journal of Radiation Biology·Siobhan M MoyesKatharine E Carr
Jan 14, 2012·Progress in Histochemistry and Cytochemistry·Katharine E CarrSiobhan M Moyes
Apr 3, 2001·Journal of Radiological Protection : Official Journal of the Society for Radiological Protection·G J HuntR A Bonfield
Apr 3, 2001·Journal of Radiological Protection : Official Journal of the Society for Radiological Protection·J D Harrison, A Phipps
Jul 6, 2000·Journal of Radiological Protection : Official Journal of the Society for Radiological Protection·D JacksonJ Gray

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