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Application of microprecipitation on membrane filters for Alpha Spectrometry, liquid scintillation counting and Mass Spectrometric determination of plutonium isotopes
-
E. Hrnecek
Veröffentlicht/Copyright:
25. September 2009
Summary
For the determination of plutonium isotopes in environmental samples, chemical separation of plutonium together with a suitable sample preparation method for measurement is necessary. In this work, a combined method for the determination of 238Pu, 239Pu, 240Pu and 241Pu based on alpha spectrometry, Liquid Scintillation Counting (LSC) and Inductively Coupled Plasma Mass Spectrometry (ICP-MS) is presented. For the alpha spectrometric determination of 238Pu and 239(40)Pu, sample preparation by coprecipitation of Pu with NdF3 on a membrane filter after separation by anion exchange, using 242Pu as tracer, is widely used. This sample preparation method was also applied as a preconcentration step for the determination of 240Pu/239Pu ICP-MS after wet ashing of a part of the membrane filter. 241Pu was measured with LSC after dissolving a part of the same membrane filter in a suitable cocktail and using the total alpha activity of the filter for determination of the chemical yield.
The use of this approach gives the advantage of combining the strengths of both radiometric and mass spectrometric methods for plutonium determination after chemical separation from environmental samples.
Results from the measurement of reference materials and from sediment samples from the Irish Sea are presented and the applied methods are compared with respect to their detection limits for the investigated nuclides.
Received: 2001-10-4
Accepted: 2002-4-11
Published Online: 2009-9-25
Published in Print: 2002-9-1
© Oldenbourg Wissenschaftsverlag, München
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Artikel in diesem Heft
- Solubility of amorphous Th(IV) hydroxide – application of LIBD to determine the solubility product and EXAFS for aqueous speciation
- Thermodynamics of the U(VI)-Ca2+-Cl −-OH −-H2O system: Solubility product of becquerelite
- Control of plutonium dioxide solubility by amorphous tetrahydroxide: A critical review of the model
- Technetium migration in fluoroapatite during thermal annealing
- Uranium release from boom clay in bicarbonate media
- Coprecipitation of thorium with UO2
- Formation of secondary phases after long-term corrosion of simulated HLW glass in brine solutions at 190 °C
- Sorption behaviour of Am on precorroded HLW glass in water and brines
- Molecular fluorescence spectroscopy and mixture analysis for the evaluation of the complexation between humic acid and UO22+
- Investigation on uranyl interaction with bioactive ligands. Synthesis and structural studies of the uranyl complexes with glycine and N-(2-mercaptopropionyl)glycine
- Complex formation of calcium with humic acid and polyacrylic acid
- Complexation of americium with humic, fulvic and citric acids at high ionic strength
- Complex formation of Eu(III) with humic acid and polyacrylic acid
- XAS study of technetium(IV) polymer formation in mixed sulphate/chloride media
- Complexation of uranium(VI) with malonate at variable temperatures
- The hydrolysis of uranium(VI)
- Corrosion and dissolution studies of UO2 containing α-emitters
- The effects of alpha-radiolysis on UO2 dissolution determined from electrochemical experiments with 238Pu-doped UO2
- Radiolytic formation of Tc(IV) oxide colloids
- Radiation-chemical effects in the near-field of a final disposal site: role of bromine on the radiolytic processes in NaCl-solutions
- The reduction of U(VI) on corroded iron under anoxic conditions
- New selenium solution speciation method by ion chromatography + gamma counting and its application to FeS2-controlled reducing conditions
- Uptake of oxo-anions by cements through solid-solution formation: experimental evidence and modelling
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- Structure of uranium sorption complexes at montmorillonite edge sites
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- Sorption and reduction of neptunium(V) on the surface of iron oxides
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- Structure alteration of C-S-H (calcium silicate hydrated phases) caused by sorption of caesium
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- Complexation studies of Eu(III) with polyacrylic acid either free in solution or adsorbed onto alumina
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- Spectroscopic studies on the interaction of U(VI) with Bacillus sphaericus
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