The Development of an Analytical Technique to Measure Stable and Radiogenic Strontium Isotope Ratios Using Thermal Ionization Mass Spectrometry with the Double Spike Method
Date
2014-05-26
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Abstract
An analytical method using a strontium “double spike” enriched in both 84Sr and 87Sr was developed to measure the n(87Sr)/n(86Sr) and n(88Sr)/n(86Sr) isotope ratios using a thermal ionization mass spectrometer. The results obtained for the SRM987 reference material using this technique are in agreement with published data. However, the results of IAPSO sea water standard revealed an enrichment in the n(88Sr)/n(86Sr) isotope ratio relative to SRM987 of 0.04 % and n(87Sr)/n(86Sr) isotope ratio of 0.709325(27), which is significantly different from the n(87Sr)/n(86Sr) ratio of 0.709191(37), which is found when one assumes a fixed n(88Sr)/n(86Sr) isotope ratio, as has been done in the past. The use of a double spike method for measuring strontium isotopic composition reveals important insights into mass dependent processes that occur as this element moves through a system as well as provide accurate radiogenic strontium isotope amount ratios.
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Physics
Citation
Elhamel, N. (2014). The Development of an Analytical Technique to Measure Stable and Radiogenic Strontium Isotope Ratios Using Thermal Ionization Mass Spectrometry with the Double Spike Method (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/28054