In this note, a high throughput, robust and sensitive method for the precise analysis of 87Sr/86Sr by Multi-Collector-Inductively Coupled Plasma-Mass Spectrometer (MC ICP-MS), Thermo Scientific Neptune PlusTM is reported. We describe the procedures for the chemical separation and purification of Sr from geological matrices such as silicates, sulfides, carbonates and waters, using Eichrom Sr-spec resins as well as the routine for Sr isotope measurement. Mass discrimination and instrument drift were corrected by using natural constant 86Sr/88Sr ratios as an internal standard. We also reported data on set of international certified standard materials (SRM NIST 987 and AGV-1) as well as intra-lab reference samples (water sample KGV-9) 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 B: Strontium (Sr) 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
In this note, a high throughput, robust and sensitive method for the precise analysis of 87Sr/86Sr by Multi-Collector-Inductively Coupled Plasma-Mass Spectrometer (MC ICP-MS), Thermo Scientific Neptune PlusTM is reported. We describe the procedures for the chemical separation and purification of Sr from geological matrices such as silicates, sulfides, carbonates and waters, using Eichrom Sr-spec resins as well as the routine for Sr isotope measurement. Mass discrimination and instrument drift were corrected by using natural constant 86Sr/88Sr ratios as an internal standard. We also reported data on set of international certified standard materials (SRM NIST 987 and AGV-1) as well as intra-lab reference samples (water sample KGV-9) 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.| File | Dimensione | Formato | |
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Not 00011002022 Pr. 1100_22042022_Report B_Sr_TeamNeptune_signed.pdf
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