Results 171 to 180 of about 5,082 (217)

Transfer of 90Sr into fish in Finnish lakes

Journal of Environmental Radioactivity, 2009
The long-term behavior of (90)Sr was investigated from 1987 to 1997 in fifteen lakes in southern and central Finland following the 1986 Chernobyl accident. Both water and fish samples (perch, pike, vendace) were analyzed. (90)Sr stays long in the freshwater ecosystem; the observed half-lives during the study period were generally around 10 years in ...
Iisa, Outola, Ritva L, Saxén, Sirpa, Heinävaara   +2 more
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The uptake of 90sr by ryegrass

Journal of Nuclear Energy. Part A. Reactor Science, 1959
Abstract It is shown that 20 per cent of the ‘fall-out’ 90 Sr deposited in rain can appear in the aerial parts of ryegrass growing during the period of deposition. It is considered that almost all this activity is taken up directly by the leaves, stems and surface roots and not by the roots in the soil.
openaire   +1 more source

A Spreadsheet Method for 90Sr and 89Sr Interpretation

Health Physics, 1988
A spreadsheet method of handling multiple data points is described for the interpretation of "radiostrontium" analyses. The method uses up to 10 or more counts on one sample, starting 1 d after the chemical separation. The unreliable "day-0" count on a relatively low activity sample is not used since it introduces too many uncertainties. The count data
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Determination of 90Sr in Portuguese foodstuffs

Journal of Radioanalytical and Nuclear Chemistry, 2010
The Nuclear and Technological Institute (ITN) has the legal responsibility to carry out the environmental radiological monitoring at a national level. This survey was planned to provide relevant information on radioactivity levels in different components of the ecosystem.
I. Lopes, M. J. Madruga, A. Mourato, J. Abrantes, M. Reis   +4 more
openaire   +1 more source

Prediction of Runoff Transport of Fallout 90Sr

Health Physics, 1994
A model is described for the prediction of runoff transfer of fallout 90Sr without recourse to long-term measurements. The values of model parameters can be readily established from few field measurements of the solid/solution partitioning of 90Sr and a natural, atmospherically delivered radionuclide such as 210Pb, and the usually well documented ...
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A measurement of the half-life of 90Sr

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1994
Abstract The half-life of 90 Sr has been measured to be 10561±14 d, where the uncertainty combines components of Type A and Type B equivalent to one standard deviation. Data from 4πβ proportional counting of four 90 Sr sources spanned 33 yr and yielded a total of 521 points.
Robert H Martin, Kerry I.W Burns, John G.V Taylor   +2 more
openaire   +1 more source

A review of measurement methodologies and their applications to environmental 90Sr

Journal of Environmental Radioactivity, 2018
The high fission yield product 90Sr has been released into the environment in large amounts due to nuclear weapon tests, nuclear power plant accidents, and nuclear fuel reprocessing industries. It is a long half-life radionuclide (28.9 y), with serious consequences to human health; hence, it is desirable to perform routine monitoring of 90Sr in ...
Yang, Shao, Guosheng, Yang, Hirofumi, Tazoe, Lingling, Ma, Masatoshi, Yamada, Diandou, Xu   +5 more
openaire   +2 more sources

Half-lives of 90Sr and 137Cs

Journal of Inorganic and Nuclear Chemistry, 1965
The half-lives of 90Sr and 137Cs have been measured both by specific activity and by direct decay over periods of 6–10 years. The results of the decay measurements are 28·0 ± 0·4 years for 90Sr and 29·9 ± 0·5 years for 137Cs; the values obtained by specific activity measurements are 28·5 ± 0·9 years for 90Sr and 30·9 ± 0·7 years for 137Cs. Recommended “
K.F. Flynn, L.E. Glendenin, A.L. Harkness, E.P. Steinberg   +3 more
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EPR dose reconstruction for bone-seeking 90Sr

Applied Radiation and Isotopes, 1999
The results of the EPR dose reconstruction in calcified tissues of dog injected with 90Sr are presented. It has been established that there is no essential difference in the values of doses absorbed in tooth tissues of teeth in symmetric positions in the mouth, whereas a significant difference occurs in the values of absorbed doses in teeth in non ...
E A, Ignatiev, N M, Lyubashevskii, E A, Shishkina, A A, Romanyukha   +3 more
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COMPARISON OF FOUR 90Sr GROUNDWATER ANALYTICAL METHODS

Health Physics, 1999
Data are presented for 45 Long Island groundwater samples each measured for 90Sr using four different analytical methods. 90Sr levels were first established by two New York State certified laboratories, one of which used the U.S. Environmental Protection Agency Radioactive Strontium in Drinking Water Method 905.0. Three of the 90Sr methods evaluated at
S, Scarpitta, J, Odin-McCabe, R, Gaschott, A, Meier, E, Klug   +4 more
openaire   +2 more sources