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This study examined the chemical and structural properties of humic substances and microbiological activity in order to verify differences in carbon dynamics along soil profiles in two Vertisols (Typic Haploxerert and Xeric Epiaquert) and two Alfisols (Mollic Haploxeralf and Ultic Haploxeralf) developed under Mediterranean climate in Italy. Humification parameters, thermal methods, including differential...
Catalytic digestion with MnO 2 was shown to be a suitable treatment for promoting organic matter humification in olive oil mill wastewater in order to increase its potential as a soil amendment and reduce environmental risk. In this study, the effects of addition of either lagooned wastewater (LW) or catalytically digested wastewater (CW) at two rates on soil and soil humic acid (HA) properties...
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...
Texture, among several other factors, may play an important role in controlling the distribution and activity of soil microbial biomass and, in turn, the size and quality of soil organic matter (SOM) pools, and the related dynamics of N and S in soil. Little information is available in the current literature on the occurrence and extent of these textural effects in semiarid soils of Argentinean Pampas...
Laser Induced Breakdown Spectroscopy (LIBS) is a recent analytical technique that is based upon the measurement of emission lines generated by atomic species close to the surface of the sample, thus allowing their chemical identification. In this work, the LIBS technique has been applied to the determination of total contents of heavy metals in a number of reference soil samples. In order to validate...
Humic acids isolated from six different Slovak soils have been characterized comparatively by using chemical methods and spectroscopic techniques including ultraviolet-visible (UV-VIS), 13 C nuclear magnetic resonance (NMR), Fourier transform infrared (FT-IR), fluorescence, and electron spin resonance (ESR). Results from elemental and functional group analyses and spectroscopic data...
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