Results 201 to 210 of about 54,997 (250)
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Measurement of natural radionuclides in U.K. diet
Science of The Total Environment, 1984The levels of radium-226, lead-210 and polonium-210 in the U.K. diet have been determined. The important food groups contributing to the intake of these radionuclides have been identified. Seventy-five percent of the daily intake of radium-226 is derived from beverages, cereals, other vegetables, bread, sugars and preserves. Seventy-five percent of the
J L, Smith-Briggs, E J, Bradley
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Natural radionuclides in mineral waters
Science of The Total Environment, 1985Concentration levels of natural radionuclides in mineral waters have been studied in several European countries. In the Federal Republic of Germany in recent years a nationwide investigation was carried out by several institutions. The concentrations of 226Ra, uranium isotopes, 210Pb and 210Po found are similar to those in other European countries ...
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Natural Radionuclides in the Environment
1982From the point of view of environmental research the significance of natural radioactive elements in the environment is twofold: one is the effects of ionizing radiation from these radionuclides to organisms living on the earth, especially man, and the other is the possible applications of natural radionuclides existing in situ as tracers for ...
Fukai, R., Yokoyama, Y.
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Radionuclides in natural terrestrial ecosystems
Science of The Total Environment, 1984p6osystems to be found in the maritime temperate zone are described. The part played by vegetation, animals and soils in the distribution and movement of radionuclides is discussed, with particular reference to natural systems. Biomass activities have been compiled for 137Cs and 239 + 240Pu in woodland and moorland ecosystems.
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Illicit Trafficking of Natural Radionuclides
AIP Conference Proceedings, 2008Natural radionuclides have been subject to trafficking worldwide, involving natural uranium ore (U 238), processed uranium (yellow cake), low enriched uranium ( 20% U 235), radium (Ra 226), polonium (Po 210), and natural thorium ore (Th 232). An important prerequisite to successful illicit trafficking activities is access to a suitable logistical ...
Steinhäusler Friedrich +3 more
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Fractionation of some natural radionuclides in Albic Retisol
Chemosphere, 2021In the present work, the fractionation of heavy natural radionuclides was investigated in Albic Retisol in the Moscow region of Russia. Fractionation was performed using the Pavlotskaya method. 238U and 232Тh were measured via inductively coupled plasma mass spectrometry and 226Ra was measured using an alpha-radiometer that considered the decay of Ra ...
D V, Manakhov +4 more
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Natural radionuclides in groundwaters
Journal of Radioanalytical and Nuclear Chemistry Articles, 1992The234U and230Th radionuclides are highly retarded by factors of 104 to 105 in basalt groundwater (Hanford) and briny groundwaters from Texas, and geothermal brine from the Salton Sea Geothermal Field (SSGF). In basalt groundwaters (low ionic strength), Ra is highly sorbed, while in brines (high ionic strength), Ra is soluble.
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Sorption of radionuclides on natural materials
Journal of Radioanalytical and Nuclear Chemistry Articles, 1986Information about the sorption of radionuclides on natural materials used for cementation of liquid radioactive wastes (RAW) is important for predictions of migration rates of radionuclides in the products of fixation. Cementation process for conditioning liquid RAW uses, besides cement, materials which improve quality of products.
G. Guliš, J. Timuîák
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Natural radionuclides in human hair
2011Naturally occurring radionuclides of terrestrial origin, such as 238U, 235U, 226Ra, 210Po and 210Pb, are present to various degrees in all environmental media, including the human body. Like other pollutants, many natural radioactive substances also accumulate in hair. In this article, the transfer to human scalp hair and typical concentrations in hair
Maarit Muikku, Weibo Li
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Behavior of natural radionuclides in wastewater treatment plants
Journal of Environmental Radioactivity, 201256 samples, including influent, primary effluent, secondary effluent and final effluent wastewater from two Spanish municipal wastewater treatment plants (WWTPs), were analyzed to assess both the occurrence and behavior of natural radioactivity during 12 sampling campaigns carried out over the period 2007-2010.
A, Camacho +7 more
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