About: Raman spectroscopic identification of usnic acid in hydrothermal minerals as a potential Martian analogue

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About: Raman spectroscopic identification of usnic acid in hydrothermal minerals as a potential Martian analogue Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Raman spectroscopy using 785 nm excitation was tested as a nondestructive method for determining the presence of the potential biomarker, usnic acid, in experimentally prepared mineral matrices. Investigated samples consisting of usnic acid mixed with powdered hydrothermal minerals, gypsum and calcite were studied. Various concentrations of usnic acid in the mineral matrix were studied to determine the detection limits of this biomarker. Usnic acid was mixed with gypsum (respectively, calcite) and covered by a UV-transparent crystal of gypsum thereby creating artificial inclusions similar to those which could be present in Martian minerals. A Raman usnic acid signal at the concentration level as low as 1 g kg(-1) was obtained in the powdered mineral matrix and 5 g kg(-1) when analyzed through the monocrystal. Raman spectroscopy using 785 nm excitation was tested as a nondestructive method for determining the presence of the potential biomarker, usnic acid, in experimentally prepared mineral matrices. Investigated samples consisting of usnic acid mixed with powdered hydrothermal minerals, gypsum and calcite were studied. Various concentrations of usnic acid in the mineral matrix were studied to determine the detection limits of this biomarker. Usnic acid was mixed with gypsum (respectively, calcite) and covered by a UV-transparent crystal of gypsum thereby creating artificial inclusions similar to those which could be present in Martian minerals. A Raman usnic acid signal at the concentration level as low as 1 g kg(-1) was obtained in the powdered mineral matrix and 5 g kg(-1) when analyzed through the monocrystal. (en)
Title	Raman spectroscopic identification of usnic acid in hydrothermal minerals as a potential Martian analogue Raman spectroscopic identification of usnic acid in hydrothermal minerals as a potential Martian analogue (en)
skos:prefLabel	Raman spectroscopic identification of usnic acid in hydrothermal minerals as a potential Martian analogue Raman spectroscopic identification of usnic acid in hydrothermal minerals as a potential Martian analogue (en)
skos:notation	RIV/00216208:11310/09:10000943!RIV10-MSM-11310___
http://linked.open...avai/riv/aktivita	S Z
http://linked.open...avai/riv/aktivity	S, Z(MSM0021620855)
http://linked.open...iv/cisloPeriodika	3
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Jehlička, Jan Osterrothová, Kateřina
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	338047
http://linked.open...ai/riv/idVysledku	RIV/00216208:11310/09:10000943
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Raman spectroscopy; identification; usnic acid; Martian analogue (en)
http://linked.open.../riv/klicoveSlovo	Raman spectroscopy identification Martian analogue usnic acid
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[31EEA06D558D]
http://linked.open...i/riv/nazevZdroje	Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy
http://linked.open...in/vavai/riv/obor	DD
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	73
http://linked.open...iv/tvurceVysledku	Jehlička, Jan Osterrothová, Kateřina
http://linked.open...ain/vavai/riv/wos	000267448600026
http://linked.open...n/vavai/riv/zamer	Material flow mechanisms in the upper spheres of the Earth
issn	1386-1425
number of pages	5 (xsd:int)
http://localhost/t...ganizacniJednotka	11310

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