Hydrogen concentration analysis in clinopyroxene using proton–proton scattering analysis
(2018) In Physics and Chemistry of Minerals 45(7). p.669-678- Abstract
Traditional methods to measure water in nominally anhydrous minerals (NAMs) are, for example, Fourier transformed infrared (FTIR) spectroscopy or secondary ion mass spectrometry (SIMS). Both well-established methods provide a low detection limit as well as high spatial resolution yet may require elaborate sample orientation or destructive sample preparation. Here we analyze the water content in erupted volcanic clinopyroxene phenocrysts by proton–proton scattering and reproduce water contents measured by FTIR spectroscopy. We show that this technique provides significant advantages over other methods as it can provide a three-dimensional distribution of hydrogen within a crystal, making the identification of potential inclusions... (More)
Traditional methods to measure water in nominally anhydrous minerals (NAMs) are, for example, Fourier transformed infrared (FTIR) spectroscopy or secondary ion mass spectrometry (SIMS). Both well-established methods provide a low detection limit as well as high spatial resolution yet may require elaborate sample orientation or destructive sample preparation. Here we analyze the water content in erupted volcanic clinopyroxene phenocrysts by proton–proton scattering and reproduce water contents measured by FTIR spectroscopy. We show that this technique provides significant advantages over other methods as it can provide a three-dimensional distribution of hydrogen within a crystal, making the identification of potential inclusions possible as well as elimination of surface contamination. The sample analysis is also independent of crystal structure and orientation and independent of matrix effects other than sample density. The results are used to validate the accuracy of wavenumber-dependent vs. mineral-specific molar absorption coefficients in FTIR spectroscopy. In addition, we present a new method for the sample preparation of very thin crystals suitable for proton–proton scattering analysis using relatively low accelerator potentials.
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- author
- Weis, Franz A. ; Ros, Linus LU ; Reichart, Patrick ; Skogby, Henrik ; Kristiansson, Per LU and Dollinger, Günther
- organization
- publishing date
- 2018-07
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Clinopyroxene, FTIR, Hydrogen, NAMs, Proton–proton scattering
- in
- Physics and Chemistry of Minerals
- volume
- 45
- issue
- 7
- pages
- 669 - 678
- publisher
- Springer
- external identifiers
-
- scopus:85042079351
- ISSN
- 0342-1791
- DOI
- 10.1007/s00269-018-0953-2
- language
- English
- LU publication?
- yes
- id
- 24aa283d-7a66-4d8b-afe0-5afba6895170
- date added to LUP
- 2018-03-06 08:54:27
- date last changed
- 2022-04-09 22:24:36
@article{24aa283d-7a66-4d8b-afe0-5afba6895170,
abstract = {{<p>Traditional methods to measure water in nominally anhydrous minerals (NAMs) are, for example, Fourier transformed infrared (FTIR) spectroscopy or secondary ion mass spectrometry (SIMS). Both well-established methods provide a low detection limit as well as high spatial resolution yet may require elaborate sample orientation or destructive sample preparation. Here we analyze the water content in erupted volcanic clinopyroxene phenocrysts by proton–proton scattering and reproduce water contents measured by FTIR spectroscopy. We show that this technique provides significant advantages over other methods as it can provide a three-dimensional distribution of hydrogen within a crystal, making the identification of potential inclusions possible as well as elimination of surface contamination. The sample analysis is also independent of crystal structure and orientation and independent of matrix effects other than sample density. The results are used to validate the accuracy of wavenumber-dependent vs. mineral-specific molar absorption coefficients in FTIR spectroscopy. In addition, we present a new method for the sample preparation of very thin crystals suitable for proton–proton scattering analysis using relatively low accelerator potentials.</p>}},
author = {{Weis, Franz A. and Ros, Linus and Reichart, Patrick and Skogby, Henrik and Kristiansson, Per and Dollinger, Günther}},
issn = {{0342-1791}},
keywords = {{Clinopyroxene; FTIR; Hydrogen; NAMs; Proton–proton scattering}},
language = {{eng}},
number = {{7}},
pages = {{669--678}},
publisher = {{Springer}},
series = {{Physics and Chemistry of Minerals}},
title = {{Hydrogen concentration analysis in clinopyroxene using proton–proton scattering analysis}},
url = {{http://dx.doi.org/10.1007/s00269-018-0953-2}},
doi = {{10.1007/s00269-018-0953-2}},
volume = {{45}},
year = {{2018}},
}