We report the setup of the method and the results of the measurements of Neodymium isotopic composition performed by Multi-Collector-Inductively Coupled Plasma-Mass Spectrometer (MC-ICP-MS), Thermo Scientific Neptune PlusTM. We accurately describe two different chromatographic separation techniques applied to silicate and carbonate rocks: the first one consists in the separation of REE with AG-1 X8 resin, and Nd from the REE with Ln-spec resin. The second is new, and involves vertical column assembly with contemporaneous separation of REE from matrix with TRU-spec resin, and Nd from REE with Ln-spec resin. Isobaric interferences and mass discrimination were corrected by using natural invariable 147Sm/144Sm and 146Nd/144Nd isotope ratios. We reported data on set of international certified standard materials (JNdi-1 and AGV-1) measured with MC-ICP-MS Neptune Plus, focusing on the accuracy and reproducibility of the analyses performed in the Neptune-TIMS Laboratory, and highlighting the advantages brought by the installation of this new mass spectrometer.
Report C: Neodymium (Nd) isotope ratio measurements by new ThermoFisher Neptune Plus Mass Spectrometer in the NEPTUNE-TIMS Laboratory (Istituto di Geoscienze e Georisorse, CNR di Pisa)
Paolo Di Giuseppe;Matteo Salvadori;Andrea Dini;Maddalena Pennisi;Irene Cornacchia;Simone Vezzoni;Andrea Rielli;Samuele Agostini
2022
Abstract
We report the setup of the method and the results of the measurements of Neodymium isotopic composition performed by Multi-Collector-Inductively Coupled Plasma-Mass Spectrometer (MC-ICP-MS), Thermo Scientific Neptune PlusTM. We accurately describe two different chromatographic separation techniques applied to silicate and carbonate rocks: the first one consists in the separation of REE with AG-1 X8 resin, and Nd from the REE with Ln-spec resin. The second is new, and involves vertical column assembly with contemporaneous separation of REE from matrix with TRU-spec resin, and Nd from REE with Ln-spec resin. Isobaric interferences and mass discrimination were corrected by using natural invariable 147Sm/144Sm and 146Nd/144Nd isotope ratios. We reported data on set of international certified standard materials (JNdi-1 and AGV-1) measured with MC-ICP-MS Neptune Plus, focusing on the accuracy and reproducibility of the analyses performed in the Neptune-TIMS Laboratory, and highlighting the advantages brought by the installation of this new mass spectrometer.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
