Dispersion of radioactive impurity in a flow passing through a tube

1976 ◽  
Vol 10 (1) ◽  
pp. 167-169
Author(s):  
V. I. Maron
Keyword(s):  
Radioactive Impurity

scholarly journals The separation of intracellular serum albumin from rat liver

1971 ◽  
Vol 123 (4) ◽  
pp. 643-648 ◽  
Author(s):  
J. D. Judah ◽  
Marion R. Nicholls
Keyword(s):  
Serum Albumin ◽  
Rat Liver ◽  
Specific Radioactivity ◽  
Exchange Chromatography ◽  
Rat Serum ◽  
Radioactive Impurity ◽  
Simple Method ◽  
High Specific Radioactivity ◽  
Chromatographic Procedure

1. Antibody precipitation of serum albumin from rat liver extracts yields impure preparations of the protein. 2. When rat liver is labelled with l-[1-14C]leucine, antibody precipitation of albumin leads to material that is contaminated with a protein or proteins of very high specific radioactivity. Only 10–25% of the radioactivity of the antibody precipitate is associated with serum albumin. 3. A chromatographic procedure is described that can be used to separate radiochemically pure serum albumin from antibody precipitates obtained from extracts of rat liver. 4. Extracellular albumin secreted by liver slices yields a precipitate with antibody which contains much less radioactive impurity. About 70–90% of the radioactivity is associated with serum albumin. Serum albumin separated by antibody precipitation from rat serum labelled in vivo was not contaminated with the radiochemical impurities associated with intracellular albumin. 5. A simple method is described of obtaining the content of serum albumin in rat liver extracts by the technique of isotope dilution and ion-exchange chromatography.

scholarly journals Non-radioactive scandium oxide receiving out of uranium ISR solutions

2022 ◽  
Vol 2155 (1) ◽  
pp. 012025
Author(s):  
M K Kylyshkanov ◽  
N N Yaroshenko ◽  
I A Khlebnikova
Keyword(s):  
Specific Activity ◽  
Raw Materials ◽  
Activity Level ◽  
Scandium Oxide ◽  
High Price ◽  
Radioactive Elements ◽  
Radioactive Impurity ◽  
Carbonate Solutions ◽  
Insoluble Compounds

Abstract The task of the research was to study and determine an effective method for the preparation of non-radioactive scandium compounds from uranium In-Situ Recovery (ISR) solutions. The widespread use of scandium is restrained by the high price due to its small production volumes, low content in the raw materials (scandium is a scattered element and does not form its own deposits), as well as the complexity of technological schemes for its extraction. Scandium receiving out of uranium reverses ISR solutions technological scheme was experimental tested, including sorption on MTS 9580 (Purolite’s production) ion exchanger with recurrent ballast impurities desorption and receiving concentrate that contains scandium. New radiation cleaning technological sequencing based on different solubility of radioactive elements and scandium in carbonate solutions, that accompanied by insoluble macro components complex formation, that contains in deactivated scandium concentrate and allows to get scandium oxide with desired component maintenance more than 94 % and less than 0,3 kilobecquerels/kg specific activity level was developed. The developed technology is based on the ability to form soluble carbonate complexes of scandium and radioactive elements, while the main macro components of the concentrate - ferrum, aluminum, calcium, silicon and others under the conditions of carbonation of the concentrate are inert or form insoluble compounds. Optimal radioactive impurity removing from concentrate conditions and scandium leaching from deactivated residue of scandium and macro impurity were studied and identified in laboratory conditions and during pilot tests.

VIII.—The Atomic Weight of the Calcium contained in very Old Potassium-rich Minerals occurring at Portsoy, Banffshire, and at Cape Wrath, Sutherlandshire

1935 ◽  
Vol 54 ◽  
pp. 88-101 ◽  
Author(s):  
William W. Smith ◽  
Thomas Tait
Keyword(s):  
Potassium Atom ◽  
Atomic Weight ◽  
Potassium Sulphate ◽  
Potassium Salts ◽  
Radioactive Impurity ◽  
Very Old ◽  
Negative Results

The radioactivity of potassium was discovered by Campbell and Wood (1907). Since the β-ray activity shown by all the potassium salts investigated was very small, the suspicion naturally arose that this activity was due to a trace of radioactive impurity and not to the potassium itself. All tests for the presence of an emanation gave, however, negative results, and it became necessary to conclude that the observed emission of the β-radiation was indeed a property of the potassium atom. The subsequent investigations of Campbell (1907) and of Hoffman (1924), whose attempts to alter the activity by chemical operations were unsuccessful, supported this conclusion, as did also the work of Biltz and Marcus, who prepared specimens of potassium sulphate from potassium minerals of different geological ages and found that the activity of the preparations per atom of potassium was always the same.

Assay of Radioactive Impurity in 99mTc-pertechnetate Eluted from 99Mo-99mTc Generator

RADIOISOTOPES ◽  
1980 ◽  
Vol 29 (2) ◽  
pp. 94-96
Author(s):  
Kenji SAEGUSA ◽  
Noboru ARIMIZU ◽  
Tsuneo NAKATA ◽  
Haruo TOHYAMA ◽  
Isamu SHIINA
Keyword(s):  
Radioactive Impurity ◽  
99Mtc Pertechnetate ◽  
99Mtc Generator

Dosimetric system for determining the emission rate of gas-aerosol radioactive impurity during a radiological accident

Atomic Energy ◽  
2009 ◽  
Vol 107 (6) ◽  
pp. 387-399 ◽  
Author(s):  
A. P. Elokhin ◽  
R. S. Khlopotin ◽  
D. F. Rau ◽  
A. N. Tkachev ◽  
A. D. Rumyantsev ◽  
...  
Keyword(s):  
Emission Rate ◽  
Radioactive Impurity ◽  
Dosimetric System
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