Podrobnosti záznamu

Název
    Identification of beta-carotene in an evaporitic matrix-evaluation of Raman spectroscopic analysis for astrobiological research on Mars
Autor
    Edwards, Howell. G.M.
    Jehlička, Jan
    Osterrothová, Kateřina
    Vítek, Petr
Jazyk
    anglicky
Typ dokumentu
    článek v periodiku
Zdrojový dokument - seriál
    Analytical and Bioanalytical Chemistry
Svazek/č.
    Roč. 393, č. 8
Strany
    9
Rok
    2009
Výraz tezauru
    astrobiology
    beta-carotene
    evaluation
    evaporitic matrix
    Identification
    Mars
    Raman spectroscopy
Klíčové slovo
    Analysis
    Astrobiological
    Beta-carotene
    Evaporitic
    Identification
    Mars
    Matrix-evaluation
    Raman
    Research
    Spectroscopic
Abstrakt (anglicky)
   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.
Přispěvatel
    UK Praha, Přírodovědecká fakulta
Kód přispěvatele
    UK, PřF
Zdrojový formát
    R
Datum importu
    8. 8. 2012