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Creator |
1c5c32b11b5ad1bd9c846a77784abc38 |
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Creator |
62176bb4b53730b813d103cf13b600a5 |
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Creator |
f156c17cc4bb0e4f4d98ca6b97fbc4fa |
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Creator |
fa82512e034c9d956e69c173fca7155a |
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Creator |
1b35f2160114480bb2a439ff7d486ae0 |
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Date |
2020-02 |
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Is Part Of |
p00320633 |
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Is Part Of |
repository |
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abstract |
Evolved gas analysis (EGA) has been successfully applied to the studies of meteorites
and Apollo lunar samples. It consists of linear heating of a material with registration
of the released volatile compounds, typically using a spectrometric technique. However,
so far no quantitative comparison was possible of the amount of gases released during
heating of a sample. To address this limitation, we have developed a Quantitative
EGA (QEGA) technique using our custom-built Finesse mass spectrometry system. It is
based on calibration of the quadrupole mass spectrometer with reference gases (e.g.
CO<sub>2</sub>, CO, H<sub>2</sub>, O<sub>2</sub>, N<sub>2</sub> or their mixtures
with known relative abundances) with known flow rate. The method was tested using
simple chemical compounds such as CaCO<sub>3</sub>, which give well-known amounts
of pure gases during their thermal decomposition. We present initial QEGA data on
two reference meteorites, Allende and Murchison. Our QEGA work is also informing the
design and operation of ProSPA spaceflight instruments being developed to perform
analogous experiments <i>in situ</i> on the lunar surface through the European Space
Agency's PROSPECT payload on Luna 27. |
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authorList |
authors |
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status |
peerReviewed |
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uri |
http://data.open.ac.uk/oro/document/1041239 |
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uri |
http://data.open.ac.uk/oro/document/1041245 |
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uri |
http://data.open.ac.uk/oro/document/1041250 |
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uri |
http://data.open.ac.uk/oro/document/1041251 |
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uri |
http://data.open.ac.uk/oro/document/1041252 |
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uri |
http://data.open.ac.uk/oro/document/1041253 |
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uri |
http://data.open.ac.uk/oro/document/1041518 |
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volume |
181 |
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type |
AcademicArticle |
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type |
Article |
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label |
Verchovsky, A. B. ; Anand, M. ; Barber, S. J. ; Sheridan, S. and Morgan, G. H. (2020).
A quantitative evolved gas analysis for extra-terrestrial samples. Planetary and
Space Science, 181, article no. 104830. |
| 68653 |
Title |
A quantitative evolved gas analysis for extra-terrestrial samples |
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in dataset |
oro |