Podrobnosti záznamu

Název
    Isotopic composition of lead in Czech coals
Autor
    Drahota, Petr
    Ettler, Vojtěch
    Mihaljevič, Martin
    Rohovec, Jan
    Strnad, Ladislav
    Šebek, Ondřej
    Vonásek, Filip
Jazyk
    anglicky
Typ dokumentu
    článek v periodiku
Zdrojový dokument - seriál
    International Journal of Coal Geology
Svazek/č.
    Roč. 78, č. 1
Strany
    9
Rok
    2009
Výraz tezauru
    206Pb/207Pb
    coal
    isotopes
    lead
    mineral composition
    speciation
Klíčové slovo
    Coals
    Composition
    Czech
    Isotopic
    Lead
Abstrakt (anglicky)
   The content, forms of bonding and isotopic compositions of lead (Pb) were studied on selected coal samples from the Czech Republic. Lead in most samples of bituminous and brown coal is mobilized by 3 M HCl. Thus, Pb could be bonded in carbonates and oxides and also to sulphides present in the coal. Bituminous coal contains an average of 33 mg/kg Pb, while brown coal contains an average of 8.9 mg/kg Pb. The 206Pb/207Pb ratio varies in the range 1.167?1.234 for bituminous and 1.172?1.24 for brown coal. No inverse proportionality of the Pb content and the 206Pb/207Pb ratio was observed in the studied samples and, thus, the Pb content in most samples is a result of the combination of lithogenic and ore Pb. It was not possible to demonstrate any statistical dependence between the operational defined speciation of Pb, the mineralogical composition and the Pb isotopic composition.
Přispěvatel
    UK Praha, Přírodovědecká fakulta
Kód přispěvatele
    UK, PřF
Zdrojový formát
    R
Datum importu
    8. 8. 2012