Lead-210 Geochronology

2013 ◽  
pp. 115-120 ◽  
Author(s):  
Jay Stratton Noller
Keyword(s):  
Lead 210

Radon and lead-210 fluxes between soil and air

1988 ◽  
Vol 70 (1-2) ◽  
pp. 98 ◽  
Author(s):  
W.C. Graustein ◽  
K.K. Turekian
Keyword(s):  
Lead 210

Foliar retention, transport and leaching of polonium-210 and lead-210

1972 ◽  
Vol 12 (4) ◽  
pp. 287-290 ◽  
Author(s):  
V.V. Athalye ◽  
K.B. Mistry
Keyword(s):  
Lead 210 ◽  
Foliar Retention

Lead-210 and Polonium-210 in Biological Samples from Alaska

Science ◽  
1966 ◽  
Vol 152 (3725) ◽  
pp. 1062-1063 ◽  
Author(s):  
T. M. Beasley ◽  
H. E. Palmer
Keyword(s):  
Biological Samples ◽  
Lead 210

Measurement of lead-210 in surface air and precipitation

Tellus ◽  
1969 ◽  
Vol 21 (1) ◽  
pp. 107-112 ◽  
Author(s):  
L. U. Joshi ◽  
C. Rangarajan ◽  
Smt Sarada Gopalakrishnan
Keyword(s):  
Lead 210

scholarly journals Features of accumulation of the technogenic radionuclides in meat of some hunting animals in the Trans-Urals

2019 ◽  
pp. 47-52
Author(s):  
Alexander Mikhailovich Okunev
Keyword(s):  
Specific Activity ◽  
Natural Radionuclides ◽  
Farm Animals ◽  
Beta Activity ◽  
Radioactive Cesium ◽  
Anthropogenic Pressure ◽  
Wild Animals ◽  
Strontium 90 ◽  
Cesium 137 ◽  
Lead 210

The degree of contamination of the organism of wild animals with radionuclides is of particular importance in the framework of environmental monitoring and assessment of its safety, both for humans and for animals. However, the majority of domestic scientific works on this subject concerns farm animals, and the information relating to hunting animals is much less. This fact determined the relevance of our work, the purpose of which was to study the features of the accumulation of global technogenic and natural radionuclides in the meat of some wild animals in the TRANS-Urals. Experimental data on the content of technogenic radionuclides in the meat of hunting animals were obtained in the autumn-winter periods of 2014 – 2018. Analysis of the average data showed, that the content in the meat of wild animals cesium-137, depending on the animal species, ranged from 4.1 to 49.2; lead-210 – 0,7 – 4,3; and strontium-90 – 0,1 – 1,7 Bq/kg. The total beta- activity of radionuclides in the meat of wild animals varied, depending on the species, from 71.2 to 104.3 Bq/kg. At the same time, all the studied samples of meat corresponded to the norms established by SanPiN-2010 for this type of food product. Some increased accumulation of radioactive cesium (49.2 Bq/kg) and other anthropogenic radionuclides was observed in wild reindeer meat, and in the southern regions of the TRANS-Urals – in bear and wild boar meat (21.1 and 17.4 Bq/kg, respectively). In the muscle tissue of the roe deer the content of this radionuclide was slightly higher than that of the elk (14.7 and 12.2 Bq/kg, respectively). The lowest concentration of cesium-137 (4.1 Bq/kg) and other nuclides was found in beaver meat. The content of strontium-90 in the meat of all tested animals was at a minimum level, and the specific activity of lead-210 was higher than strontium-90 by 2 - 10 times, depending on the species, which indicates the accumulation of this radionuclide in forest ecosystems due to anthropogenic pressure and expansion of the technogenic zone of cities.  The results of studies have shown that differences in the accumulation of technogenic radionuclides in the meat of the hunting animals are largely related to the nature of feeding and composition of the diet of wild species, and are subject to significant fluctuations in accordance with the change in the volume and qualities of food resources in forest biotopes over the year.      

Distribution of uranium series radionuclides in upland vegetation of northern Saskatchewan. I. Plant and soil concentrations

1986 ◽  
Vol 64 (11) ◽  
pp. 2446-2452 ◽  
Author(s):  
J. W. Sheard
Keyword(s):  
Plant Species ◽  
Primary Source ◽  
The Other ◽  
Moss Species ◽  
Uranium Series ◽  
Significant Difference ◽  
Northern Saskatchewan ◽  
Uranium Accumulation ◽  
Lead 210

Levels of lead-210, polonium-210, radium-226, and uranium are reported for 10 plant species (2 conifer, 4 shrub, 3 lichen, and 1 moss species) and soils in northern Saskatchewan. Two localities were studied in each of two regions, one uraniferous, the other not. Nonvascular species showed the highest levels of lead-210, polonium-210, and uranium, and the shrubs, the highest levels of radium-226. The lichen and moss species show no significant difference in accumulation of lead-210 and polonium-210 among regions, reflecting the assumed atmospheric distribution and particulate accumulation of these radionuclides. Seven of eight species for which comparisons could be made showed significant differences in uranium accumulation among regions. High levels in the lichen and moss species suggest that the primary source of uranium in these species is not directly from the soil. In contrast to the other radionuclides, radium-226 only showed significant differences among localities within regions, this being due to high accumulations occurring at one locality in the nonuraniferous region.

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