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Humic acids (HAs) were isolated from the first generation of the EUROSOILS, a reference set of five samples representing the most widespread soil units in the European Union (EU). The EUROSOIL (E)-HA were characterized for their compositional, structural, and functional properties by using chemical methods and spectroscopic techniques, including Fourier transform infrared (FT IR), nuclear magnetic...
The objective of this study was to characterise the composition, structure and functionalities of humic acids (HAs) isolated from hydromorphic sandy soils of the upper Negro river basin, Amazonas, Brazil, in order to obtain information on organic matter dynamics in these tropical forest ecosystems. For this purpose, three soil layers, i.e., the superficial earthworm casts, the A horizon and the Bh...
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