VI. A Survey of the Metabolism of Caesium in Man

Rundo, J.

doi:10.1259/0007-1285-37-434-108

Cited by 66 publications

(16 citation statements)

References 11 publications

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“…12 However, studies of the retention of caesium isotopes, over the period several days to several years after intake, have shown no evidence of a long-term divergence from a single exponential function of time with a few months' half-life; in one instance it was stated that any fraction retained with a much longer half-life did not exceed 0.1 percent of the initial content. 8 2) The model attempts to relate data on the estimated deposition rate averaged over the U.K. to ensuing burdens of 137 Cs in residents of a restricted area. The annual deposition of stratospheric fall-out shows large geographical variations, according to latitude and amounts of rainfall.…”

Section: B Calculations and Resultsmentioning

confidence: 99%

“…The spread may be attributed largely to differences in the dietary habits of our subjects and in their biological half-lives for caesium..The latter quantity governs the level at which equilibrium between excretion and a constant daily intake is reached, and its average value appears to be 1 05 days, but individual estimates ranging from 53 to 200 days have been quoted. 8 By comparison, the estimated errors of measurement were small: in recent years, the statistical uncertainty in the result of an individual measurement, associated with the random nature of radioactive decay, has amounted typically to only ±13 percent.…”

Section: Observed Caesium-137/potassium Ratiosmentioning

confidence: 99%

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The caesium‐137 content of man related to fallout in rain, 1957–76

Newton¹,

Eagle²,

Venn³

1977

International Journal of Environmental Studies

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Amounts of 137 Cs in residents of Central Southern England were smaller during 1974-76 than at any time during the previous 17 years, and 17 times lower than those recorded during 1964-65. A simple model has been developed, empirically relating 137 Cs in rainfall during 1957-76 to the ensuing burdens in man, and the results suggest that a slowly-declining reservoir of deposited material from the weapons tests of 1955-63 currently contributes as much dietary contamination as the low levels of recent fall out. 137 Cs burdens are therefore unlikely to decline by more than a factor of 2-3 during the next decade, even in the absence of additional weapons tests. The radiation dose rate from the current (early 1977) average level of 137 Cs in these subjects is however only one percent of that delivered by the body's natural 40 K.

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Section: B Calculations and Resultsmentioning

confidence: 99%

Section: Observed Caesium-137/potassium Ratiosmentioning

confidence: 99%

The caesium‐137 content of man related to fallout in rain, 1957–76

Newton¹,

Eagle²,

Venn³

1977

International Journal of Environmental Studies

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“…Administration of potassium in the diet caused an increase in radiocaesium excretion (Mraz et al 1958;Mraz 1959;Johnson et al 1968), while the administration of stable caesium was not efficient (Oughton et al 1989;Rundo 1964). Different complexes or chelating additives are used successfully, with the ability to absorb and/or to bind radionuclides forming chemical compounds not absorbed by the digestive tract but easily excreted from the body (Giese 1988;Giese 1989;Pöschl and Baláš 1999;Pöschl and Řezáč 2004).…”

Section: Possibilities Of Reduction Of Food Contaminationmentioning

confidence: 99%

Artificial environmental radionuclides in Europe and methods of lowering their foodstuff contamination – a review

et al. 2016

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This review discusses the consequences of the food chain contamination with radionuclides, especially focusing on the radiocaesium impact after the Chernobyl nuclear accident. In particular, the 137 Cs isotope still represents a risk. Until present it is still detectable in the meat of game animals, especially in wild boar, but also in elk and reindeer. Although the occurrence of highly contaminated foods in most of Europe is currently limited, along the German-Czech border (the Šumava Region) the activity concentration of the 137 Cs isotope in the meat of wild boar exceeds the acceptable limit several times. Additionally, the article describes simple processing technologies (cooking, pickling etc.) that lead to reduction of radionuclides in contaminated food.

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“…Further properties such as fire and acid resistance, micro-bacterial resistance and high compressive strength make geopolymers attractive materials to encapsulate intermediate level nuclear waste (ILW) such as radioactive Cs and Sr [18][19][20][21][22][23][24] produced during fission of uranium [25]. Radioactive Cs has similar properties to potassium (K) and after intake into the body it is absorbed by the gastrointestinal tract and built into the muscle structure [26,27]. There it undergoes β decay which can damage the cell structures.…”

Section: Introductionmentioning

confidence: 99%