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AbstractAbstract
[en] Uranium and thorium in large scale integration (LSI) materials were determined by INAA. α-particles were also measured in these materials. The contents of uranium and thorium and the α-activity in ceramics and zirconia samples were very high. Calculation of α-flux from uranium and thorium contents and analysis of α-spectra were carried out for the ceramics and zirconia samples. The calculated values of α-flux in these samples agreed with the α-flux measured. (author)
Primary Subject
Source
2 refs.
Record Type
Journal Article
Journal
Journal of Radioanalytical Chemistry; ISSN 0134-0719;
; p. 345-351

Country of publication
ACTINIDE NUCLEI, ACTINIDES, ACTIVATION ANALYSIS, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, CHALCOGENIDES, CHEMICAL ANALYSIS, DAYS LIVING RADIOISOTOPES, ELEMENTS, HEAVY NUCLEI, ISOTOPES, METALS, NEPTUNIUM ISOTOPES, NUCLEI, ODD-EVEN NUCLEI, ORGANIC COMPOUNDS, ORGANIC POLYMERS, OXIDES, OXYGEN COMPOUNDS, POLYMERS, PROTACTINIUM ISOTOPES, RADIOISOTOPES, SPECTROSCOPY, TRANSITION ELEMENT COMPOUNDS, ZIRCONIUM COMPOUNDS
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Instrumental neutron activation analysis (INAA) techniques for filterable river water and suspended particulate matter (SPM) are described together with preconcentration techniques and simple radiochemical procedures to allow analyses when the trace element concentrations are very low (e.g. for mercury) and also when the sodium and calcium concentrations are very high. Detection limits are given for these methods and compared with those of other analytical techniques, including inductively coupled plasma emission spectrometry. The precision of measurement is between 10-15% for most elements and the detection limits are between 1 ng - 1 μg. (author)
Primary Subject
Source
17 refs.
Record Type
Journal Article
Journal
Journal of Radioanalytical Chemistry; ISSN 0134-0719;
; p. 379-395

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Soil samples from a waste water cleaning facility in Berlin, Germany, have been analyzed using several activation analysis methods. 43 elements have been determined by instrumental high energy photon activation analysis (PAA), instrumental thermal neutron activation analysis (NAA) and 14 MeV neutron activation analysis (fNAA). Conventional gamma-ray spectroscopy and low energy photon spectroscopy (LEPS) have been applied for product activity measurement. It has turned out that these methods in combination offer a wide spectrum of analytical information. (author)
Primary Subject
Source
26 refs.
Record Type
Journal Article
Literature Type
Numerical Data
Journal
Journal of Radioanalytical Chemistry; ISSN 0134-0719;
; 101-117

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] With the aim of indicating environmental pollution effects by heavy metals on humans using hair, nondestructive activation analysis was applied to 382 normal Japanese hair samples (background level). Elemental contents of hair could be determined for Ag, Al, As, Br, Ca, Cd, Cl, Co, Cr, Cu, Fe, Hg, I, K, La, Mg, Mn, Na, S, Sb, Sc, Se, Sm, Ti, V and Zn. As these elements in hair have wide concentration ranges, the differences in concentration distribution between groups (sex, age, permanent treatment and regional difference) are discussed. A method for hair sampling is presented. (author)
Primary Subject
Source
13 refs.
Record Type
Journal Article
Journal
Journal of Radioanalytical Chemistry; ISSN 0134-0719;
; p. 269-282

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] The effect of temperature on the extraction of Co2+, Zn2+, Cd1+ and Hg2+ by salicylaldoxime diluted with carbon tetrachloride was investigated radiometrically. It is found that the extraction constants at 25 deg C increase linearly with 1/r, where r is the effective coordination radius of the metal cation. The thermodynamic data calculated from the effect of temperature on the extraction showed that, 1) the extraction process is endothermic, 2) the dehydration of the metal cation in the extraction process is the predominating factor in determining the enthalpy variation and 3) the entropy variation is a contribution of the degree of order caused by the hydration of the proton and the highly ordered chelate structure of the extracted species. (author)
Primary Subject
Source
9 refs.
Record Type
Journal Article
Journal
Journal of Radioanalytical Chemistry; ISSN 0134-0719;
; p. 295-300

Country of publication
AMINES, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, BETA-PLUS DECAY RADIOISOTOPES, CADMIUM ISOTOPES, COBALT ISOTOPES, COMPLEXES, DAYS LIVING RADIOISOTOPES, ELECTRON CAPTURE RADIOISOTOPES, EVEN-ODD NUCLEI, HEAVY NUCLEI, HYDROCARBONS, HYDROXY COMPOUNDS, INTERMEDIATE MASS NUCLEI, ISOMERIC TRANSITION ISOTOPES, ISOTOPE APPLICATIONS, ISOTOPES, MERCURY ISOTOPES, MINUTES LIVING RADIOISOTOPES, NUCLEI, ODD-ODD NUCLEI, ORGANIC CHLORINE COMPOUNDS, ORGANIC COMPOUNDS, ORGANIC HALOGEN COMPOUNDS, ORGANIC NITROGEN COMPOUNDS, RADIOISOTOPES, SEPARATION PROCESSES, TRANSITION ELEMENT COMPLEXES, YEARS LIVING RADIOISOTOPES, ZINC ISOTOPES
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] The solubility and solubility product of europium trifluoride were measured by radiometric, potentiometric and conductometric methods. There are significant differences in the values of both solubility and solubility product obtained by the three different techniques. Due to reasons discussed on the text, radiometric values seem to be more acceptable than the others. The thermodynamic functions such as ΔH0, ΔG0 and ΔS0 for the dissolution process were also measured. The positive values of ΔH0 and ΔG0 and the negative value of ΔS0 are indicative of the slight solubility of EuF3. The dependence of solubility on pH and also on the fluoride concentration has also been studied. It was confirmed that europium forms a monofluoride in aqueous solution. The stability constant of this complex was estimated. (author)
Primary Subject
Source
12 refs.
Record Type
Journal Article
Journal
Journal of Radioanalytical Chemistry; ISSN 0134-0719;
; p. 283-294

Country of publication
BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, BETA-PLUS DECAY RADIOISOTOPES, CHEMICAL ANALYSIS, EUROPIUM COMPOUNDS, EUROPIUM ISOTOPES, FLUORIDES, FLUORINE COMPOUNDS, HALIDES, HALOGEN COMPOUNDS, INTERMEDIATE MASS NUCLEI, ISOTOPE APPLICATIONS, ISOTOPES, NUCLEI, ODD-ODD NUCLEI, QUANTITATIVE CHEMICAL ANALYSIS, RADIOISOTOPES, RARE EARTH COMPOUNDS, RARE EARTH NUCLEI, TITRATION, YEARS LIVING RADIOISOTOPES
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] The possibility to use the most intensive gamma-peak of 239Np for INAA of uranium with epithermal neutrons and high resolution Ge(Li)-spectrometry is evaluated. A way for calculation of the peak area of overlapping peaks of 153Sm and 239Np is proposed. This can be used in other similar cases in the practice of NAA. On this basis a scheme for NAA of uranium in geological objects is proposed. The lower detection limit is 8x10-8 g U and the precision is 5-10% (relative standard deviation). The accuracy is demonstrated by the analysis of some geological standard reference materials. (author)
Primary Subject
Source
19 refs.
Record Type
Journal Article
Literature Type
Numerical Data
Journal
Journal of Radioanalytical Chemistry; ISSN 0134-0719;
; p. 397-404

Country of publication
ACTINIDE NUCLEI, ACTINIDES, ACTIVATION ANALYSIS, BARYONS, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, CHEMICAL ANALYSIS, DATA, DAYS LIVING RADIOISOTOPES, ELEMENTARY PARTICLES, ELEMENTS, EVEN-ODD NUCLEI, FERMIONS, HADRONS, HEAVY NUCLEI, IGNEOUS ROCKS, INFORMATION, INTERMEDIATE MASS NUCLEI, ISOTOPES, METALS, MINERALS, NEPTUNIUM ISOTOPES, NEUTRONS, NUCLEI, NUCLEONS, NUMERICAL DATA, ODD-EVEN NUCLEI, RADIOISOTOPES, RARE EARTH NUCLEI, ROCKS, SAMARIUM ISOTOPES, SPECTROSCOPY
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Proton-induced prompt gamma-ray emission (PIGE) analysis has been used for the determination of light elements in human dense bone samples. Li, B, N, O, F, Na, Mg, Al, P and Ca peaks were detected. Smoothed, freeze-dried samples were irradiated in vacuum by 2.4 MeV protons and the induced prompt gamma rays recorded with a 110 cm3 Ge(Li) detector. Absolute concentrations were calculated on the basis of both calibration standards and pure element gamma-ray yields. The mean (+-1 S.D.) concentrations as ppm or weight % obtained for 15 dense bone samples were: B 8.0 (3.3)ppm, N 12.2 (0.8)%, O 34.8 (2.3)%, F 639 (417)ppm, Na 5763 (371)ppm, Mg 2078 (290)ppm, P 9.26 (0.50)% and Ca 20.4 (1.3)%. The detection limits obtained without any prior concentration of the bone samples were: 0.3 ppm for Li, 2.0 ppm for B, 1.0% for N, 1.0% for O, 1.0 ppm for F, 3.0 ppm for Na, 50 ppm for Mg, 22 ppm for Al, 600 ppm for P and 0.8% for Ca. Detection limits for other light elements (4<=Z<=21) have also been estimated. (author)
Primary Subject
Source
19 refs.
Record Type
Journal Article
Journal
Journal of Radioanalytical Chemistry; ISSN 0134-0719;
; p. 367-378

Country of publication
ALKALI METALS, ALKALINE EARTH METALS, BARYON REACTIONS, BARYONS, BODY, CATIONS, CHARGED PARTICLES, CHEMICAL ANALYSIS, ELECTROMAGNETIC RADIATION, ELEMENTARY PARTICLES, ELEMENTS, FERMIONS, GAMMA RADIATION, HADRON REACTIONS, HADRONS, HALOGENS, HYDROGEN IONS, HYDROGEN IONS 1 PLUS, IONIZING RADIATIONS, IONS, METALS, NONMETALS, NUCLEAR REACTIONS, NUCLEON REACTIONS, NUCLEONS, ORGANS, RADIATIONS, SEMIMETALS, SPECTRA
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] Measurements on daughter radionuclides of parent-daughter relations can be used in routine instrumental neutron activation analysis if appropriate corrections for differences in irradiation, decay and counting time are applied. These corrections and their precision are discussed. (author)
Primary Subject
Source
1 ref.
Record Type
Journal Article
Journal
Journal of Radioanalytical Chemistry; ISSN 0134-0719;
; p. 317-324

Country of publication
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
AbstractAbstract
[en] By means of thermal neutron activation and countings on the small planar and large coaxial Ge(Li) detector, 13 elements were determined in various silicate rocks, using short-lived radionuclides with half-lives from 2 min to 15 h. A method of routine analysis with simple dead-time and pile-up correction is described and tested with the standard rocks AGV-1 and G-2. (author)
Primary Subject
Source
8 refs.
Record Type
Journal Article
Journal
Journal of Radioanalytical Chemistry; ISSN 0134-0719;
; p. 353-365

Country of publication
ACTINIDE NUCLEI, ACTIVATION ANALYSIS, ALUMINIUM ISOTOPES, BARIUM ISOTOPES, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, BETA-PLUS DECAY RADIOISOTOPES, CHEMICAL ANALYSIS, COBALT ISOTOPES, DYSPROSIUM ISOTOPES, ELECTRON CAPTURE RADIOISOTOPES, EUROPIUM ISOTOPES, EVEN-ODD NUCLEI, HEAVY NUCLEI, HOURS LIVING RADIOISOTOPES, INTERMEDIATE MASS NUCLEI, ISOMERIC TRANSITION ISOTOPES, ISOTOPES, LIGHT NUCLEI, MAGNESIUM ISOTOPES, MANGANESE ISOTOPES, MINUTES LIVING RADIOISOTOPES, NUCLEI, ODD-ODD NUCLEI, POTASSIUM ISOTOPES, RADIOISOTOPES, RARE EARTH NUCLEI, SAMARIUM ISOTOPES, SECONDS LIVING RADIOISOTOPES, SODIUM ISOTOPES, TITANIUM ISOTOPES, URANIUM ISOTOPES, VANADIUM ISOTOPES, YEARS LIVING RADIOISOTOPES
Reference NumberReference Number
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