Podrobnosti záznamu

Název
    Humic acids quality of Cambisols developed on gneiss and amphibolite
Autor
    Liptaj, T.
    Pospíšilová, L'.
    Šťastný, Martin
    Žigová, Anna
Jazyk
    anglicky
Typ dokumentu
    článek v odborném periodiku
Zdrojový dokument - seriál
    Acta geodynamica et geomaterialia
Svazek/č.
    Roč. 9, č. 4
Strany
    s. 503-510
Rok
    2012
Poznámky
    Projekt: GA526/08/0434, GA ČR3cav_un_auth*0241613
    Rozsah: 8 s. : WWW
Předmětová kategorie
    arable soil,
    Cambisols
    grassland soil
    humic acids
    parent material
    SRATR FTIR and 13C NMR spectroscopy
    X-ray diffraction
Klíčové slovo
    Acids
    Amphibolite
    Cambisols
    Developed
    Gneiss
    Humic
    Quality
Abstrakt (anglicky)
   Chemical composition and structure of humic acids isolated from Cambisols forming on gneiss and amphibolite were studied. Cambisols differ in pH, cation exchange capacity, mineralogy composition, organic carbon input, plant residue and type of management. 13C NMR and FTIR spectroscopy were used to show the main differences in humic substances quality. Humic acids isolated from soils developed on gneiss and amphibolite had wide variety of functional groups and different content of aromatic and aliphatic groups. Humic acids (HA) in arable soils contained more aromatic compounds and carbon in their molecule to compare with HA isolated from grassland. Forming of higher stability aggregates was connected with higher content of aliphatic groups in HA isolated from the grassland. Generally, humic acids in Cambisols represent young humic acids, with lower carbon content and high tendency to oxidation processes.
   Their chemical activity was mainly influenced by chemical composition and functional groups content.
Přispěvatel
    AV ČR Brno, Geologický ústav
Kód přispěvatele
    AV ČR, GLÚ
Zdrojový formát
    U
Datum importu
    19. 3. 2014