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Statements

Subject Item
n2:RIV%2F00216208%3A11310%2F09%3A00014573%21RIV10-MSM-11310___
rdf:type
skos:Concept n14:Vysledek
dcterms: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 10 mg 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 on Earth. 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 10 mg 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 on Earth.
dcterms:title
Beta-carotene-A possible biomarker in the Martian evaporitic environment: Raman micro-spectroscopic study Beta-carotene-A possible biomarker in the Martian evaporitic environment: Raman micro-spectroscopic study
skos:prefLabel
Beta-carotene-A possible biomarker in the Martian evaporitic environment: Raman micro-spectroscopic study Beta-carotene-A possible biomarker in the Martian evaporitic environment: Raman micro-spectroscopic study
skos:notation
RIV/00216208:11310/09:00014573!RIV10-MSM-11310___
n3:aktivita
n13:Z n13:S
n3:aktivity
S, Z(MSM0021620855)
n3:cisloPeriodika
4
n3:dodaniDat
n15:2010
n3:domaciTvurceVysledku
n9:8453403 n9:4619447 n9:9951814
n3:druhVysledku
n6:J
n3:duvernostUdaju
n11:S
n3:entitaPredkladatele
n7:predkladatel
n3:idSjednocenehoVysledku
304916
n3:idVysledku
RIV/00216208:11310/09:00014573
n3:jazykVysledku
n16:eng
n3:klicovaSlova
Beta-carotene; biomarkers; Martian evaporitic environmen; Raman micro-spectroscopy
n3:klicoveSlovo
n10:Raman%20micro-spectroscopy n10:biomarkers n10:Martian%20evaporitic%20environmen n10:Beta-carotene
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[E2747194DA6B]
n3:nazevZdroje
Planetary and Space Science
n3:obor
n18:DD
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
3
n3:rokUplatneniVysledku
n15:2009
n3:svazekPeriodika
57
n3:tvurceVysledku
Vítek, Petr Osterrothová, Kateřina Jehlička, Jan
n3:wos
000265993800007
n3:zamer
n12:MSM0021620855
s:issn
0032-0633
s:numberOfPages
6
n17:organizacniJednotka
11310