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Chemical and Optica...
Chemical and Optical Identification of Micrometer-Sized 1.9 Billion-Year-Old Fossils by Combining a Miniature Laser Ablation Ionization Mass Spectrometry System with an Optical Microscope
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Wiesendanger, Reto (författare)
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Wacey, David (författare)
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Tulej, Marek (författare)
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- Neubeck, Anna (författare)
- Stockholms universitet,Institutionen för geologiska vetenskaper
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Ivarsson, Magnus (författare)
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Grimaudo, Valentine (författare)
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Moreno-Garcia, Pavel (författare)
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Cedeno-Lopez, Alena (författare)
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Riedo, Andreas (författare)
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Wurz, Peter (författare)
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(creator_code:org_t)
- Mary Ann Liebert Inc, 2018
- 2018
- Engelska.
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Ingår i: Astrobiology. - : Mary Ann Liebert Inc. - 1531-1074 .- 1557-8070. ; 18:8, s. 1071-1080
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The recognition of biosignatures on planetary bodies requires the analysis of the putative microfossil with a set of complementary analytical techniques. This includes localized elemental and isotopic analysis of both, the putative microfossil and its surrounding host matrix. If the analysis can be performed with spatial resolution at the micrometer level and ppm detection sensitivities, valuable information on the (bio)chemical and physical processes that influenced the sample material can be gained. Our miniaturized laser ablation ionization mass spectrometry (LIMS)-time-of-flight mass spectrometer instrument is a valid candidate for performing the required chemical analysis in situ. However, up until now it was limited by the spatial accuracy of the sampling. In this contribution, we introduce a newly developed microscope system with micrometer accuracy for Ultra High Vacuum application, which allows a significant increase in the measurement capabilities of our miniature LIMS system. The new enhancement allows identification and efficient and accurate sampling of features of micrometer-sized fossils in a host matrix. The performance of our system is demonstrated by the identification and chemical analysis of signatures of micrometer-sized fossil structures in the 1.9 billion-year-old Gunflint chert.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
Nyckelord
- Biosignatures
- Gunflint chert
- In situ mass spectrometry
- Life-detection
- Microscopy
- Space instrumentation
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Wiesendanger, Re ...
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Wacey, David
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Tulej, Marek
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Neubeck, Anna
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Ivarsson, Magnus
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Grimaudo, Valent ...
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visa fler...
-
Moreno-Garcia, P ...
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Cedeno-Lopez, Al ...
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Riedo, Andreas
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Wurz, Peter
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visa färre...
- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Fysik
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- NATURVETENSKAP
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NATURVETENSKAP
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och Biologi
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- NATURVETENSKAP
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NATURVETENSKAP
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och Geovetenskap och ...
- Artiklar i publikationen
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Astrobiology
- Av lärosätet
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Stockholms universitet