Document Detail


The transfer of strontium-90 and caesium-137 to milk in a dairy herd grazing near a major nuclear installation.
MedLine Citation:
PMID:  6710139     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A field investigation of the transfer of artificially produced radionuclides in the pasture--cow--milk pathway has been made at a farm close to the nuclear fuel reprocessing installation at Sellafield on the north-west coast of England. This paper reports results from analyses of samples collected during 1981, reports transfers coefficients for 90Sr and 137Cs from various types of feed to milk, and discusses factors that affect the transfer of these radionuclides. It is shown that during 1981 a large proportion of the 90Sr and 137Cs consumed by cattle grazing near Sellafield was derived from activity deposited in previous years. Transfer coefficients to milk, Fm, have been derived which are within the ranges of those observed in tracer and fallout studies. There are significant seasonal changes in transfer. For 90Sr, values of Fm between 9 X 10(-4)d 1(-1) and 4 X 10(-3)d 1(-1) have been obtained. It is concluded that this large range arises because daily intakes of 90Sr by the herd during the winter months are lower (by a factor of about 3) than intakes during the summer months and that the concentration of 90Sr in milk is not in equilibrium with intake, that is, the concentration of 90Sr in milk is maintained both by recent intakes and by remobilisation of activity that has been accumulated in bone from earlier intakes. For 137Cs, values of Fm between 3 X 10(-3)d 1(-1) and 9 X 10(-3)d 1(-1) have been obtained. It is concluded that this range most probably occurs because during the summer months, when the cows are grazing, a substantial proportion of the 137Cs intake is associated with soil on the surface of herbage and that, in this form, the 137Cs is less available for uptake from the digestive tract of the cows.
Authors:
T J Sumerling; N J Dodd; N Green
Related Documents :
2004979 - Economic effects of mastitis prevention strategies for dairy producers.
23240089 - Enzymes provide demographers with food for thought.
11842309 - Cell-surface expression of cd25, cd26, and cd30 by allergen-specific t cells is intrins...
15738229 - Pregnancy rates and milk production in natural service and artificially inseminated dai...
6710139 - The transfer of strontium-90 and caesium-137 to milk in a dairy herd grazing near a maj...
9530619 - Long-term consumption of whey hydrolysate formula by lactating women reduces the transf...
6528959 - A pharmacokinetic study of the recommended dosing schedules of theo-dur and uniphylline.
16759439 - Nutritional quality and price of university food bank hampers.
6611699 - Energetic limits on reproduction: maternal food intake.
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Science of the total environment     Volume:  34     ISSN:  0048-9697     ISO Abbreviation:  Sci. Total Environ.     Publication Date:  1984 Mar 
Date Detail:
Created Date:  1984-05-18     Completed Date:  1984-05-18     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0330500     Medline TA:  Sci Total Environ     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  57-72     Citation Subset:  IM    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Animals
Cattle / metabolism*
Cesium Radioisotopes / analysis*,  metabolism
Female
Great Britain
Male
Milk / analysis*
Nuclear Reactors
Radionuclide Generators
Soil Pollutants / analysis*
Soil Pollutants, Radioactive / analysis*,  metabolism
Strontium Radioisotopes / analysis*,  metabolism
Chemical
Reg. No./Substance:
0/Cesium Radioisotopes; 0/Soil Pollutants; 0/Soil Pollutants, Radioactive; 0/Strontium Radioisotopes

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Plasma zinc and jejunal mucosal zinc in gastric carcinoma.
Next Document:  Dietary exposure of man to chlorinated benzenes in the United Kingdom.