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Article
Physico-chemical forms of radiostrontium in simulated freshwaters
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Article
Physico-chemical forms of radiostrontium in simulated freshwaters
A method for the analysis of the physico-chemical forms of radiostrontium in waters is described and applied to the simulated lake and groundwaters to which were later added clay minerals and humus substances....
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Article
Neutron activation analysis of final molasses from Cuban sugar industry
Thermal and epithermal non-destructive activation analyses have been performed on samples of final molasses from 14 different sugar factories, covering the most important regions in Cuba. From the first measur...
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Article
Study of CdTe/CdS-thin films by isotope dilution, neutron activation analysis, inductively coupled plasma mass spectrometry and secondary ion mass spectrometry
Thin polycrystalline CdTe films can be used as materials for solar cells. The CdTe surface is etched with H3PO4/HNO3 solution to remove soluble Cd compounds and to leave insoluble Te compounds on the surface and...
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Article
Non-conventional measurement techniques for the determination of some long-lived radionuclides produced in nuclear fuel a literature survey
The results of a literature survey on non-radiometric analytical techniques for the determination of long-lived radionuclides are described. The methods which have been considered are accelerator mass spectrom...
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Article
Instrumental neutron activation analysis of rock samples from Ugep area of Cross River State, Nigeria
The theory and analytical procedures in Instrumental Neutron Activation Analysis (INAA) are discussed. Application of the method to the determination of sixteen trace elements: Na, K, Mn, Sm, La, Fe, Th, Sc, C...
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Article
Determination of impurities in nuclear fuel element components by neutron activation analysis
Neutron activation analysis methods for the determination of impurities in zirconium cladding material and uranium oxide are described. Detection limits for the elements Al, Cd, Cr, Co, Cu, Hf, Fe, Mn, Ni, W a...
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Article
Neutron activation analysis of semiconductor materials
Two examples of the use of neutron activation analysis for the characterization of semiconductor materials are given. 23 elements were determined in ASTM silicon intercomparison samples. Most elements are belo...
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Article
An automatic NAA analyzer for short-lived nuclides
An automatic activation analyzer with sample changer, pneumatic transfer system and fast pulse counting with real time pulse pile-up and dead time compensation is described. Transfer times between 80 and 300 m...
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Article
Separation of metallic impurities from uranium by anion exchange on Dowex 1×8 resin
The separation of metallic impurities from uranium by anion exchange with a Dowex 1×8 resin has been investigated. The following elements can be quantitatively separated from 400 mg uranium using a 1 cm diamet...
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Article
An automatic data acquisition and handling system for activation analysis
An automatic measurement and data handling system for activation analysis is described. The system comprises five automatic γ-spectrometers with sample changers, a central computer with four workstations and t...
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Article
Determination of the elemental composition of copper and bronze objects by neutron activation analysis
A method for the elemental analysis of copper and bronze objects is described. Na, Co, Ni, Cu, Zn, As, Ag, Sn, Sb, W, Ir and Au are determined through instrumental neutron activation analysis. Mg, Al, V, Ti an...
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Article
Determination of the silver content of ancient silver coins by neutron activation analysis
A reactor neutron activation analysis procedure for the determination of the silver content of silver coins is described. The samples are irradiated for 1 s, cooled for 85 s and measured for 60 s with a Ge-det...
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Article
A computer program for activation analysis
A computer program for calculating activation analysis results is described. The program comprises two gamma spectrum analysis programs, STOAV and SAMPO and one program for calculating elemental concentrations...
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Article
The radioanalytical bibliography of Finland (1936–1977)
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Article
Activation analysis of bromine in rock samples
A simple method for the radiochemical neutron activation analysis of bromine in rock samples is described. The irradiated samples are ignited in an induction furnace in a flow of air for four minutes. The brom...
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Article
A simple method for the determination of uranium and thorium by delayed neutron counting
A simple method for the determination of uranium and thorium by delayed neutron counting is described. One portion of the sample is irradiated in a reactor and the delayed neutrons are counted. Another portion...
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Article
Rapid radiochemical separations using and induction furnace: Determination of sulphur in rocks
The use of an induction furnace for rapid radiochemical separations in neutron activation analysis of rocks is discussed in general and the activation analysis of sulphur in geological samples is described as ...
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Article
Elemental and nuclear anlaysis at the Reactor Laboratory, Technical Research Centre of Finland
The analytical activity of the Reactor Laboratory of the Technical Research Centre of Finland is discussed.
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Article
Radiochemical activation analysis of arsenic, selenium and antimony in biological samples
A method for the neutron activation analysis of arsenic, selenium and antimony has been developed. A radiochemical separation is performed by distillation followed by precipitation of the individual elements. ...
