The gastrointestinal absorption of plutonium and americium in rats and guinea pigs after ingestion of dusts from the former nuclear weapons site at Maralinga: implications for human exposure

Harrison, John; Naylor, G P; Stather, J.W.

doi:10.1016/0048-9697(94)90458-8

Cited by 12 publications

(11 citation statements)

References 12 publications

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“…Coughtrey, 1990;Harrison et al, 1994;Gilbert et al, 1989;Ham et al, 1989). Whilst for some radionuclides this approach may provide an estimate of absorption, it is insensitive and negative values of absorption can be derived.…”

Section: Measurement Of Gastrointestinal Absorptionmentioning

confidence: 98%

Gastrointestinal fractional absorption of radionuclides in adult domestic ruminants

Howard

Beresford

Barnett

et al. 2009

Journal of Environmental Radioactivity

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Section: Measurement Of Gastrointestinal Absorptionmentioning

confidence: 98%

Gastrointestinal fractional absorption of radionuclides in adult domestic ruminants

Howard

Beresford

Barnett

et al. 2009

Journal of Environmental Radioactivity

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“…The amount of ingested plutonium or americium crossing the gut wall to the blood is assumed to be 5 ´ 10 Ð4 for Pu and Am in vegetation, and 10 Ð5 [19] and 5 ´ 10 Ð4 for the fraction of Pu and Am, respectively, ingested via soil. Of the fraction of Pu or Am reaching the blood, 45% is assumed to go to bone and 45% to the liver [17,20] .…”

Section: +240mentioning

confidence: 99%

Evaluation of critical pathways, radionuclides, and remedial measures for reducing the radiological dose to returning populations at a former nuclear test site

Robison¹

1997

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t o r yThis is a preprint of a paper intended for publication in a journal or proceedings. Since changes may be made before publication, this preprint is made available with the understanding that it will not be cited or reproduced without the permission of the author. This paper gives a general outline of the remediation experiments with a more detailed description of a preferred Ôcombined optionÕ. Our comparative evaluation on various remedial methods show that the combined optionÑpotassium treatment of the entire islands with limited excavation of soil in village and housing areasÑwill be effective in reducing the dose to about 10% of pretreatment levels, and offers very significant benefits with respect to adverse environmental impacts as well as savings in overall costs, time, and required expert resources.

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“…Since the plutonium (both 239Pu and 240Pu) concentration in Rongelap soil is reported ) to be 150 mBq g-' (4 pCi g-'), about 64 mBq g-' would be 239Pu. Similarly, Baverstock et al (1995) indicates the average and standard deviation of 239+240Pu concentration in 0-5 cm topsoil (8 samples) at the Rongelap Island were 1985140 mBq g-' with a Harrison et al (1989) and Haywood and Smith (1990) reported an average soil intake of 10,000 mg d-' in dose assessments for the Emu and Maralinga nuclear weapons testing sites in Australia. As a result of resuspension, soil dust can be deposited on plants and in food during preparation.…”

Section: Estimation Of Plutonium Ingestion Intake Per Daymentioning

confidence: 93%

Gastrointestinal Absorption of Plutonium by the Marshall Islanders

Sun¹,

Meinhold²

1997

Health Physics

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The gastrointestinal absorption constant (fi) is a critical parameter in assessing systemic uptake following the ingestion of a radioactive material and in monitoring such intakes. This study addresses the latter, particularly for plutonium, and from environmental measurements derives an f, value of 4 X for the Marshallese population. The uncertainty associated with the methodology and measurements used in this fi value assessment is evaluated. This evaluation takes into account the results from 24-h urine samples and the particular lifestyle of the Marshallese. Plutonium intake resulting from soil consumption is a primary parameter in this evaluation; for this study, it was assumed to be 500 mg d-l. Thef, value determined here is consistent with the values in ICRP Publication 67 of 5~1 0 -~ for ages 1 to adult, and is the same as that suggested by the NRPB. Health Phys. 73(1):167-175; 1997

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The gastrointestinal absorption of plutonium and americium in rats and guinea pigs after ingestion of dusts from the former nuclear weapons site at Maralinga: implications for human exposure

Cited by 12 publications

References 12 publications

Gastrointestinal fractional absorption of radionuclides in adult domestic ruminants

Gastrointestinal fractional absorption of radionuclides in adult domestic ruminants

Evaluation of critical pathways, radionuclides, and remedial measures for reducing the radiological dose to returning populations at a former nuclear test site

Gastrointestinal Absorption of Plutonium by the Marshall Islanders

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