Hydrogen isotopic fractionation in secondary ion mass spectrometry using polyatomic ions
| Autor: | Ting-Di Wu, Emmanuel Dartois, Jean-Luc Guerquin-Kern, N. Bardin, J. Duprat, Georges Slodzian, Donia Baklouti, Rosario Brunetto, Cécile Engrand |
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| Přispěvatelé: | Centre de Sciences Nucléaires et de Sciences de la Matière (CSNSM AS), Université Paris-Saclay-Univ. Paris-Sud-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2015 |
| Předmět: |
Secondary ion mass spectrometry
Hydrogen isotopic measurements Hydrogen [PHYS.ASTR.EP]Physics [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] Analytical chemistry chemistry.chemical_element Ionic bonding Fractionation Instrumental mass fractionation 01 natural sciences 03 medical and health sciences Micron scale Physical and Theoretical Chemistry Polyatomic ions Instrumentation Spectroscopy 030304 developmental biology [PHYS]Physics [physics] 0303 health sciences 010401 analytical chemistry Polyatomic ion Solid samples Condensed Matter Physics 0104 chemical sciences Isotopic ratio chemistry Secondary emission D/H ratio [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] |
| Zdroj: | International Journal of Mass Spectrometry International Journal of Mass Spectrometry, Elsevier, 2015, pp.17-24. ⟨10.1016/j.ijms.2015.10.005⟩ |
| ISSN: | 1387-3806 |
| DOI: | 10.1016/j.ijms.2015.10.005 |
| Popis: | International audience; Isotopic measurements at the micron scale using secondary ion mass spectrometry (SIMS) require an accurate control on the instrumental mass fractionation (IMF). The IMF correction is challenging since substantial mass fractionation can occur during both emission and detection processes. In this work, we report hydrogen isotopic measurements on a series of organic standards using polyatomic ions (CH-, CD-, C2H-, C2D-) with the NanoSIMS-50 instrument. We show that the D/H ratios resulting from the measurement of CD-/CH- and C2D-/C2H- ratios are close to the true D/H ratios of the samples over more than 3 decades and allow accurate hydrogen isotopic measurements to be performed in solid samples. Large secondary emission yields are usually associated with high electron affinities and correlate presently with low IMF effects. Moreover, we show that even when large variations in secondary ionic current are observed, an accurate isotopic ratio can still be inferred. (C) 2015 Elsevier B.V. All rights reserved. |
| Databáze: | OpenAIRE |
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