Record details

Title
    Identification of beta-carotene in an evaporitic matrix-evaluation of Raman spectroscopic analysis for astrobiological research on Mars
Author
    Edwards, Howell. G.M.
    Jehlička, Jan
    Osterrothová, Kateřina
    Vítek, Petr
Language
    anglicky
Publication type
    článek v periodiku
Source title - serial
    Analytical and Bioanalytical Chemistry
Vol./nr.
    Roč. 393, č. 8
Pages
    9
Year
    2009
Thesaurus term
    astrobiology
    beta-carotene
    evaluation
    evaporitic matrix
    Identification
    Mars
    Raman spectroscopy
Keyword
    Analysis
    Astrobiological
    Beta-carotene
    Evaporitic
    Identification
    Mars
    Matrix-evaluation
    Raman
    Research
    Spectroscopic
Abstract (in english)
   In this paper, Raman microspectrometry was tested as a nondestructive method of determining the lowest detectable ?-carotene content in experimentally prepared evaporitic matrices?namely, gypsum, halite and epsomite. Two excitation wavelengths were compared?514.5 and 785 nm, ?-carotene signals at the 0.1 to 10 mg kg?1 level?the number of registered ?-carotene Raman bands differed depending on the particular mineral matrix and the excitation wavelength. Concentrations of ?-carotene of about one order of magnitude higher were identified when analysed through single crystals of gypsum and epsomite, respectively.
Contributor
    UK Praha, Přírodovědecká fakulta
Contributor code
    UK, PřF
Source format
    R
Import date
    8. 8. 2012