One step U-Pu-Cs-Ln-steel separation using TRU preconditioned extraction resins from Eichrom for application on transmutation targets

Simultaneous uranium/plutonium separation and direct isotope ratio measurements by using CO2 as the gas in a collision/reaction cell based MC-ICPMS

“…Consequently, U and Pu isotopic measurements in nuclear samples are often associated with chemical separation techniques. Anion and cation-exchange separation, [12][13][14] solid phase extraction chromatographic separation, [15][16][17][18][19][20] liquid-liquid extraction, [21][22][23] and ion-chromatographic separation after pre-treatment and co-precipitation 24 have been used. These methods have some major drawbacks as they require time consuming preparation steps increasing consequently the risk of natural contamination, the handling time on radioactive samples and the amount of radioactive wastes produced.…”

“…The developed analytical method was validated using a transmutation 235 U target sample by comparing U and Pu isotopic ratios obtained by direct CO 2 measurements with U and Pu isotopic ratios obtained after chemical separation. 18…”

Attractive approach to analyse trace and ultra-trace elements on transmutation targets by direct separation of isobaric interferences using collision reaction cell implanted on MC-ICPMS

“…The level of Eu/Gd interference for the different isotopes in the case of this target is presented in Table IV. Pu isotopic results after direct Pu/U separation using NH 3 The major results are illustrated in Table V for all Pu ratios on a 235 U sample doped with Pu in the same proportion than indicated in Table IV. A U-free Pu solution has also been analysed for comparison with this reaction gas.…”

“…First if the steel container is dissolved simultaneously with the powder the activity of the solution will be higher that the maximum activity that can be handled in glove box. Secondly the presence of a steel matrice (Fe, Cr, Ni) extends the chemical separation for subsequent isotopic analysis [3] and finally the presence of Mo impurities hampers the accurate isotopic measurements of, for example, the three Mo targets ( 95 Mo, 97 Mo and 100 Mo) after irradiation. An important part of the project during the last three years consisted to the conception of a system implanted in shielded cell installations to open the steel container and collect all the powder.…”

Atomic spectrometry update. Industrial analysis: metals, chemicals and advanced materials

“…Gold supported on cerium and zirconium mixed oxides were also reported and the effects of the preparation and physico-chemical properties of these materials with respect to the oxidation of carbon monoxide was discussed in detail. 417 A range of analyses were carried out, including BET surface area measurements, SEM-EDS, XRD, carbon monoxide temperature programmed reduction, HRTEM and TOF-SIMS using 69 Ga + primary ions. For the SIMS analysis the powder samples were formed into tablets.…”