Date of Award
5-6-2010
Document Type
Thesis
Degree Name
Chemistry, MS
First Advisor
Hideya Koizumi
Committee Members
Hashim Ali; Mark Draganjac; Richard Warby
Call Number
LD 251 .A566t 2010 S62
Abstract
The isotope ratio 87Sr/86Sr, typically reported in geologic investigations, is obtained by direct electrospray ionization of aqueous sample containing Sr(II), Rb(I) and 18c6. At relatively high concentrations, we observed favorable formation of Sr2+(18c6)2 and Rb+(18c6) over Sr2+(18c6) complexes. Physical separation of Sr2+(18c6)2 and Rb+(18c6) as well as separation of Sr2+(18c6)2 is observed by simply injecting the sample solution to ESI source using simple PEEK tubing in neutral pH. These phenomena are caused by the difference in mobility of the complexes and masked by the gas phase association reactions. ESI-QITMS successfully obtained the expected isotope distribution of Sr(II) without any interference from 87Rb and without any chromatographic separation of 87Sr and 87Rb which typically interferes with the isotope ratio 87Sr/86Sr in ICP-MS studies.
Rights Management
This work is licensed under a Creative Commons Attribution 4.0 International License.
Recommended Citation
Song, Sheng, "A Preliminary Study in Probing Rapid Method of Isotope 87Sr/86Sr Analysis by Electrospray Ionization -Quadrupole Ion Trap - Mass Spectrometry" (2010). Student Theses and Dissertations. 986.
https://arch.astate.edu/all-etd/986
