Knowledge Base
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- MC-ICPMS
- Neptune
- Laser Ablation
- U-Pb
- Multi-Ion Counting
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In Situ U-Pb Zircon Dating Using Laser Ablation-Multi Ion Counting-ICP-MS (LA-MIC-ICP-MS)
Claudia Bouman (1), Johannes Schwieters (1), Alain Cocherie (2), Michèle Robert (2) and Michael Wieser (3)
1) Thermo Fisher Scientific, Bremen, Germany, 2) BRGM, Orléans, France, 3) University of Calgary, Alberta, Canada
AN30021
Goal: This note describes in-situ U-Pb analysis in zircons by Laser Ablation using Multi-Ion-Counting on the Neptune MC-ICPMS. Four zircons with different ages were used to evaluate the potential of this technique, including 91500, PMA7, CN92 (UQ-Z1) and 5FRATI.
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- TIMS
- Triton
- Ca isotopes
- Static Multicollection
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Advances in High Precision Isotope Ratio Measurements of Calcium Using TI-MS
Dietmar Tuttas and Johannes B. Schwieters
Thermo Fisher Scientific, Bremen, Germany
AN30018
Goal: High precision calcium analyses were performed on the Thermo Scientific TRITON in Thermal Ionization mode (TI-MS). This report demonstrates improved internal and external precisions on 40Ca/44Ca of better than 25 ppm (1σ), approaching theoretical limits.
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- TIMS
- Triton
- Uranium
- Total Evaporation
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Total Sample Evaporation of 1 ng SRM U350 - Precision and Accuracy by Static Faraday Cup Multicollection
Dietmar Tuttas
Thermo Fisher Scientific, Bremen, Germany
AN30017
Goal: This report described the use of "Total Evaporation" to obtain high precise and accurate U isotope ratio data. During total sample evaporation, a sample is continuously and completely evaporated from the filament. The final results are represented by the averaged isotopic mean values at the end of the analysis, when no measurable amount of sample is left on the filament
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- N-TIMS
- Triton
- Os Isotopes
- Static Multicollection
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High Precision Osmium Isotope Analyses - Negative Thermal Ionization Mass Spectrometry and Static Faraday Cup Multicollection
Dietmar Tuttas
Thermo Fisher Scientific, Bremen, Germany
AN30016
Goal: This report describes the measurement of Os isotopes using N-TIMS and static Faraday Cup Collection using the Triton.
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- TIMS
- Triton
- Sr
- Nd
- Static Multicollection
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High Precision Strontium and Neodymium Isotope Analyses - Static Multiple Ion Collection and Amplifier Rotation
Dietmar Tuttas and Johannes B. Schwieters
Thermo Fisher Scientific, Bremen, Germany
AN30015
Goal: The Thermo Scientific TRITON has specifications for Nd and Sr of < 5 ppm internal and external precision. This note explains how this specification is achieved in static multicollection mode without applying cup factors.