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Precise Determination of Mass-Dependent Variations in the Isotopic Composition of Molybdenum Using MC-ICPMS
Abstract
We present an analytical approach for the precise determination of mass-dependent differences in the isotopic composition of Mo between samples and reference standards using multiple-collector magnetic sector inductively coupled plasma mass spectrometry (MC-ICPMS). Either Zr or Ru "element spikes" are employed to correct for instrumental mass bias. Differences in 95Mo/97Mo can be determined to a precision of +/-0.2%o (+2sigma) using 1-10 microg of Mo. Similar precision is possible for other ratios after correction for isobaric interferences from either spike element. This approach facilitates study of mass-dependent variations in the isotopic composition of Mo in nature and in materials produced by laboratory processes. We observe fractionation of Mo isotopes of approximately 1.5%o/amu during ion-exchange chromatography in the laboratory and a shift of approximately 0.3%o/amu between natural MoS2 and a laboratory standard.
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Cited by
Molybdenum isotope records as a potential new proxy for paleoceanography
Siebert, C., Nägler, T. F., von Blanckenburg, F., & Kramers, J. D. (2003) · Earth and Planetary Science Letters · doi:10.1016/s0012-821x(03)00189-4 · Cited by 573
High precision Fe isotope measurements with high mass resolution MC-ICPMS
Weyer, S., & Schwieters, J. B. (2003) · International Journal of Mass Spectrometry · doi:10.1016/s1387-3806(03)00078-2 · Cited by 398
Metal Stable Isotopes in Paleoceanography
Anbar, A. D., & Rouxel, O. (2007) · Annual Review of Earth and Planetary Sciences · doi:10.1146/annurev.earth.34.031405.125029 · Cited by 365
Self-citationTHE STABLE ISOTOPE GEOCHEMISTRY OF MOLYBDENUM
Kendall, B., Dahl, T. W., & Anbar, A. D. (2017) · Reviews in Mineralogy and Geochemistry · doi:10.2138/rmg.2017.82.16 · Cited by 333
Self-citationKendall, B., Creaser, R. A., Gordon, G. W., & Anbar, A. D. (2009) · Geochimica et Cosmochimica Acta · doi:10.1016/j.gca.2009.02.013 · Cited by 259
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Metadata
- Authors
- Anbar, A. D., Knab, K. A., & Barling, J.
- Venue
- Analytical Chemistry
- Publisher
- American Chemical Society (ACS)
- Published
- 2001-03-06
- Volume
- 73
- Issue
- 7
- Pages
- 1425-1431
- ISSN
- 0003-2700 (ISSN-L)
- 1520-6882
- OpenAlex
- W2063850108
- Cited by
- 159
- References
- 0
- FWCI
- 12.72
- Type
- journal article
- Language
- en
- Open access
- closed
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- Anbar, A. D., Knab, K. A., & Barling, J. (2001). Precise Determination of Mass-Dependent Variations in the Isotopic Composition of Molybdenum Using MC-ICPMS. Analytical Chemistry. https://doi.org/10.1021/ac000829w
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