Beta-carotene-A possible biomarker in the Martian evaporitic environment: Raman micro-spectroscopic study

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F09%3A00014573" target="_blank" >RIV/00216208:11310/09:00014573 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Beta-carotene-A possible biomarker in the Martian evaporitic environment: Raman micro-spectroscopic study
Original language description
Raman micro-spectroscopy was tested as a nondestructive method of determining the presence of beta-carotene in experimentally prepared evaporitic matrices. Samples prepared by mixing beta-carotene with powdered gypsum, halite and epsomite were analyzed using a 785 nm excitation source. Various concentrations of beta-carotene in the matrices were investigated to determine the lowest beta-carotene content detectable by Raman microspectroscopy. We were able to obtain a clear beta-carotene signal at the 10mg kg(-1) concentration level-the number of registered beta-carotene Raman bands differed depending on the particular mineral matrix. Spectral signatures of beta-carotene were detected even when analyzing samples containing 1 mg kg(-1) of this molecule.The 10-100 mg kg(-1) of beta-carotene in mineral matrices (halite, epsomite) was detected when analyzed through the monocrystal of gypsum and epsomite, respectively. These results will aid both in-situ analyses on Mars and sample analyses
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
DD - Geochemistry
OECD FORD branch
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Project
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Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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