Molecular characterization of soil organic matter from native vegetation–pasture–sugarcane transitions in Brazil

2016 ◽  
Vol 548-549 ◽  
pp. 450-462 ◽  
Author(s):  
Dener Márcio da Silva Oliveira ◽  
Judith Schellekens ◽  
Carlos Eduardo Pellegrino Cerri
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Molecular Characterization ◽  
Native Vegetation

Molecular characterization of soil organic matter and its extractable humic fraction from long-term field experiments under different cropping systems

Geoderma ◽  
2021 ◽  
Vol 383 ◽  
pp. 114700
Author(s):  
Claudia Savarese ◽  
Marios Drosos ◽  
Riccardo Spaccini ◽  
Vincenza Cozzolino ◽  
Alessandro Piccolo
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Molecular Characterization ◽  
Field Experiments ◽  
Cropping Systems ◽  
Humic Fraction ◽  
Term Field

Advanced Solvent Based Methods for Molecular Characterization of Soil Organic Matter by High-Resolution Mass Spectrometry

2015 ◽  
Vol 87 (10) ◽  
pp. 5206-5215 ◽  
Author(s):  
Malak M. Tfaily ◽  
Rosalie K. Chu ◽  
Nikola Tolić ◽  
Kristyn M. Roscioli ◽  
Christopher R. Anderton ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Organic Matter ◽  
Soil Organic Matter ◽  
High Resolution ◽  
Molecular Characterization ◽  
High Resolution Mass Spectrometry ◽  
High Resolution Mass ◽  
Resolution Mass

Two dimensional NMR spectroscopy for molecular characterization of soil organic matter: Application to boreal soils and litter

2017 ◽  
Vol 113 ◽  
pp. 184-195 ◽  
Author(s):  
Laure N. Soucémarianadin ◽  
Björn Erhagen ◽  
Mats B. Nilsson ◽  
Mats G. Öquist ◽  
Peter Immerzeel ◽  
...  
Keyword(s):  
Organic Matter ◽  
Nmr Spectroscopy ◽  
Soil Organic Matter ◽  
Molecular Characterization ◽  
Two Dimensional ◽  
Boreal Soils

Molecular characterization of soil organic matter in Pleistocene moraines from the Bolivian Andes

Geoderma ◽  
1996 ◽  
Vol 72 (1-2) ◽  
pp. 133-148 ◽  
Author(s):  
P. Leinweber ◽  
E. Jordan ◽  
H.-R. Schulten
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Molecular Characterization ◽  
Bolivian Andes

Structural Characterization of Soil Organic Matter and Humic Acids in Particle-Size Fractions of an Agricultural Soil

2002 ◽  
Vol 66 (1) ◽  
pp. 129 ◽  
Author(s):  
Benny Chefetz ◽  
Jorge Tarchitzky ◽  
Ashish P. Deshmukh ◽  
Patrick G. Hatcher ◽  
Yona Chen
Keyword(s):  
Particle Size ◽  
Organic Matter ◽  
Soil Organic Matter ◽  
Humic Acids ◽  
Structural Characterization ◽  
Agricultural Soil ◽  
Size Fractions ◽  
Particle Size Fractions

scholarly journals Characterization of Soil Organic Matter Individual Fractions (Fulvic Acids, Humic Acids, and Humins) by Spectroscopic and Electrochemical Techniques in Agricultural Soils

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1067
Author(s):  
Aleksandra Ukalska-Jaruga ◽  
Romualda Bejger ◽  
Guillaume Debaene ◽  
Bożena Smreczak
Keyword(s):  
Molecular Weight ◽  
Organic Matter ◽  
Soil Organic Matter ◽  
Humic Substances ◽  
Humic Acids ◽  
Agricultural Soils ◽  
Fulvic Acids ◽  
Sorption Properties ◽  
Aliphatic Chains

The objective of this paper was to investigate the molecular characterization of soil organic matter fractions (humic substances (HS): fulvic acids-FAs, humic acids-HAs, and humins-HNs), which are the most reactive soil components. A wide spectrum of spectroscopic (UV–VIS and VIS–nearIR), as well as electrochemical (zeta potential, particle size diameter, and polydispersity index), methods were applied to find the relevant differences in the behavior, formation, composition, and sorption properties of HS fractions derived from various soils. Soil material (n = 30) used for the study were sampled from the surface layer (0–30 cm) of agricultural soils. FAs and HAs were isolated by sequential extraction in alkaline and acidic solutions, according to the International Humic Substances Society method, while HNs was determined in the soil residue (after FAs and HAs extraction) by mineral fraction digestion using a 0.1M HCL/0.3M HF mixture and DMSO. Our study showed that significant differences in the molecular structures of FAs, Has, and HNs occurred. Optical analysis confirmed the lower molecular weight of FAs with high amount of lignin-like compounds and the higher weighted aliphatic–aromatic structure of HAs. The HNs were characterized by a very pronounced and strong condensed structure associated with the highest molecular weight. HAs and HNs molecules exhibited an abundance of acidic, phenolic, and amine functional groups at the aromatic ring and aliphatic chains, while FAs mainly showed the presence of methyl, methylene, ethenyl, and carboxyl reactive groups. HS was characterized by high polydispersity related with their structure. FAs were characterized by ellipsoidal shape as being associated to the long aliphatic chains, while HAs and HNs revealed a smaller particle diameter and a more spherical shape caused by the higher intermolecular forcing between the particles. The observed trends directly indicate that individual HS fractions differ in behavior, formation, composition, and sorption properties, which reflects their binding potential to other molecules depending on soil properties resulting from their type. The determined properties of individual HS fractions are presented as averaged characteristics over the examined soils with different physico-chemical properties.

scholarly journals Molecular characterization of suspended and sedimentary organic matter in an Arctic delta

1996 ◽  
Vol 41 (3) ◽  
pp. 488-497 ◽  
Author(s):  
S. Peulvé ◽  
M.-A. Sicre ◽  
A. Saliot ◽  
J. W. De Leeuw ◽  
M. Baas
Keyword(s):  
Organic Matter ◽  
Molecular Characterization ◽  
Sedimentary Organic Matter

scholarly journals Molecular characterization of an end-residue of humeomics applied to a soil humic acid

RSC Advances ◽  
2014 ◽  
Vol 4 (45) ◽  
pp. 23658-23665 ◽  
Author(s):  
A. Nebbioso ◽  
A. Piccolo ◽  
M. Lamshöft ◽  
M. Spiteller
Keyword(s):  
Organic Matter ◽  
Humic Acid ◽  
Molecular Characterization ◽  
Natural Organic Matter ◽  
Molecular Composition ◽  
Chemical Fractionation ◽  
Soil Humic Acid

Humeomics encompasses step-wise chemical fractionation and instrumental determination to fully characterize the heterogeneous molecular composition of natural organic matter.

Geochemical characterization of soil organic matter and variability of a postglacial detrital organic supply (chaillexon lake, france)

1998 ◽  
Vol 23 (12) ◽  
pp. 1057-1069 ◽  
Author(s):  
Christian di-Giovanni ◽  
Jean Robert Disnar ◽  
Vincent Bichet ◽  
Michel Campy ◽  
Bernard Guillet
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Geochemical Characterization
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