Repozytorium
Wyszukaj
Kolekcje
Inne
H-binding groups in lignite νs.soil humic acids: NICA-Donnan and spectroscopic parameters.
Autorzy
Rok wydania
2009
Czasopismo
Journal of Colloid and Interface Science
Numer woluminu
332
Strony
78-84
DOI
10.1016/j.jcis.2008.12.023
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
A comparative study has been carried out for two sets of humic acids isolated from lignites and soils. H-binding data were analyzed using the NICA-Donnan model, for three Greek lignite humic acids (HA) plus IHSS Leonardite reference HA, and five Greek soil HAs plus a commercial peat HA. (13)C-CP-MAS NMR and H-binding data provide quantitative estimates for functional groups, showing that lignite HAs of diverse origin have strikingly homogeneous properties, while the H-binding structural units of soil HAs are characterized by a large degree of variability. Consistent differences between soil HA vs. lignite HA are revealed at the level of functional groups' concentrations. In the pH range 4 to 10, soil HA showed a charge variation <3 [equiv kg(-1)] while lignite HAs showed a higher charge variation >3.5 [equiv kg(-1)].
Słowa kluczowe
humic acid, lignite, soil, Greek, NICA, H-binding, 13 C NMR, spectroscopy
Adres publiczny
https://doi.org/ 10.1016/j.jcis.2008.12.023
Strona internetowa wydawcy
Podobne publikacje
Effect of selected organic materials on soil humic acids chemical properties.
Pospíšilová Lubica, Horáková Eva, Fišera Miroslav, Jerzykiewicz Maria, Menšik Ladislav
Humic acids as regulators of soil functionality and crop performance in sustainable agroecosystems
Drosos Marios, Oyebiyi Oluwatoyosi, Hoque Md. Muzammal, Jerzykiewicz Maria, Lelario Filomena, Pekař Miloslav, Thammavongsa Sounilan, Scopa Antonio, Ntougias Spyridon
Palladium-catalyzed pyrazole-directed sp3 C—H bond arylation for the synthesis of β-phenethylamines.
Gulia Nurbey, Daugulis Olafs