The preparation and calibration of calcium synthetic isotope mixtures
Abstract
Calcium is one of the most-abundant elements but still there is no calibrated measurement of its isotopic composition. In this work a set of six mixtures were gravimetrically prepared from highly enriched calcium isotopes. The purification of the enriched calcium material was done by vacuum distillation. Solutions of the now highly enriched metallic 40Ca, 42Ca, 44Ca and 48Ca where prepared in an inert atmosphere. Mixtures were then made gravimetrically with the isotope ratios in Table 1. The measurements of the mixtures were done by a total evaporation method for isotopic analysis by multi-collector thermal ionization mass spectrometry (TIMS). This work describes the preparation, measurement and the calibrated results of the mixtures and mother solutions.Table 1: Isotope ratios of calcium isotope mixtures
- Publication:
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AGU Fall Meeting Abstracts
- Pub Date:
- December 2010
- Bibcode:
- 2010AGUFM.V53D..05B
- Keywords:
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- 0452 BIOGEOSCIENCES / Instruments and techniques;
- 1041 GEOCHEMISTRY / Stable isotope geochemistry;
- 1094 GEOCHEMISTRY / Instruments and techniques