Multi-element determination in environmental samples by mass spectrometric isotope dilution analysis using thermal ionization

1988 ◽  
Vol 331 (2) ◽  
pp. 111-113 ◽  
Author(s):  
K. Hilpert ◽  
E. Waidmann
Keyword(s):  
Isotope Dilution ◽  
Environmental Samples ◽  
Mass Spectrometric ◽  
Thermal Ionization ◽  
Isotope Dilution Analysis ◽  
Element Determination

Determination of Actinide Elements in Nuclear Fuels by X-Ray Analysis

1974 ◽  
Vol 18 ◽  
pp. 62-75
Author(s):  
A.H.E. von Baeckmann ◽  
D. Ertel ◽  
J. Neuber
Keyword(s):  
Isotope Dilution ◽  
Active Material ◽  
Internal Standard ◽  
Fluorescence Analysis ◽  
Mass Spectrometric ◽  
Operating Conditions ◽  
Automated System ◽  
Isotope Dilution Analysis ◽  
Nuclear Fuels ◽  
X Ray

AbstractX-ray fluorescence analysis has been used for some years at two Institutes of the Karlsruhe Nuclear Research Center to determine routinely thorium, uranium, and plutonium in unirradiated and irradiated nuclear fuels. It has "been used in addition to assay neptunium, americium and curium contained in irradiated samples. The method excels because it is versatile, rapid, tamperproof, and efficient. As a rule, fission products, pollutions, and foreign activities do not interfere with the determination which can be made in a direct way without chemical separation. In practice, the nuclear fuels are dissolved prior to the analysis and a given amount of an appropriate element as an “internal standard” is added. The accuracies attainable (1 σ RSD better than 1 %) are comparable with the mass spectrometric isotope dilution analysis so that in the input analysis of reprocessing plants X-ray fluorescence analysis constitutes a true alternative to the mass spectrometric isotope dilution analysis.Within the efforts to automate the method the prototype of the fully automated system is presently tested with non-active material. A first, not yet fully automated, development stage is being installed in the Karlsruhe Reprocessing Plant. It is anticipated that it will be tested soon under operating conditions. Complete automation of the system is scheduled to be completed at a later date.

Isotope Dilution–Total Evaporation–Thermal Ionization Mass Spectrometric Direct Determination of Radioactive Strontium-90 in Microdrop Samples

2020 ◽  
Vol 92 (24) ◽  
pp. 16058-16065
Author(s):  
Chihiro Ito ◽  
Ryoya Shimode ◽  
Takashi Miyazaki ◽  
Shigeyuki Wakaki ◽  
Katsuhiko Suzuki ◽  
...  
Keyword(s):  
Isotope Dilution ◽  
Direct Determination ◽  
Mass Spectrometric ◽  
Thermal Ionization ◽  
Ionization Mass ◽  
Total Evaporation ◽  
Strontium 90 ◽  
Thermal Ionization Mass

Bestimmung der Halbwertszeit von 210Pb

1969 ◽  
Vol 24 (4) ◽  
pp. 612-615 ◽  
Author(s):  
A. Höhndorf
Keyword(s):  
Isotope Dilution ◽  
Half Life ◽  
Specific Activity ◽  
Mass Spectrometric ◽  
Isotope Dilution Analysis ◽  
Isotope Dilution Method ◽  
Dilution Method ◽  
Daughter Product ◽  
Pb Concentration

Abstract The half-life of 210Pb has been calculated from measurements of the specific activity and the 210Pb-concentration of a 210Pb-solution. The specific 210Pb-activity was determined by measuring the daughter product 210Po using an α-spectrometric isotope dilution method with 208Po as tracer. The 210Pb-concentration was measured by mass-spectrometric isotope dilution analysis. A half-life of 22.26 ± 0.22 ( = 2 σ) years has been obtained.

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