%0 Journal Article %1 WOS:000415771300007 %A Oliveira, Naiara C %A Paschoal, Alexandre R %A Paula, Ricardo J %A Constantino, Isabela C %A Bisinoti, Marcia C %A Moreira, Altair B %A Fregolente, Lais G %A Santana, Ariane M %A Sousa, Francisco A %A Ferreira, Odair P %A Paula, Amauri J %C RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS %D 2018 %I ELSEVIER %J GEODERMA %K Carbon Indio; Indio} Mulata Preta Soil Sustained Terra amendments; de dispersive energy fertility; sequestration; spectroscopy; {X-ray %P 58-66 %R 10.1016/j.geoderma.2017.09.034 %T Morphological analysis of soil particles at multiple length-scale reveals nutrient stocks of Amazonian Anthrosols %V 311 %X We have imaged the particles of Brazilian soils at multiple length scales, from a few microns to millimeters, and soil particle size distributions were calculated with unmatched precision. The analysis included the Amazonian soil ``Terra Mulata de fndio'' (TMI), an anthropogenic soil (Anthrosol) with sustained fertility and a large amount of stabilized organic matter. Firstly, the soils were imaged ex situ, without any chemical processing, with sequential electron scanning of the pelletized soil samples, covering a total area of 8 x 8 mm. Secondly, it was performed a computational analysis of the large-field X-ray images assembled from hundreds of adjacent elemental maps, thus resulting in high-definition images (4800 x 4800 pixels). This analytical approach provides a large sampling with the identification of > 10,000 particles over the scanned area. The particles identified consisted of Al, C, Ca, Cr, F, Fe, Mg, Mn, Na, 0, P, S, Si and Ti. A significantly larger concentration of C-, Ca- and P-based particles, of up to 100 mu m(2) of cross-section area, was found in TMI samples in comparison with oxisol and ultisol soils. While the mean distance between neighboring C, Ca and P particles in TMI was of 40-70 mu m, the value was of hundreds of microns in oxisol and ultisol. Furthermore, mapping of micrometric carbon particles by Raman spectroscopy indicated that they have a graphitic structure with a large amount of defects, partially associated with particle oxidation, although a well-preserved sp(2) graphitic structure is also present. From a technological perspective, improved soil amendments, such as biochar, can be rationally designed from the ``fingerprint'' described here for soil particles of Amazonian Anthrosols (i.e., morphological and structural characteristics), which can result in an increase in fertility and the optimization of carbon sequestration in the future.

@article{WOS:000415771300007, abstract = {We have imaged the particles of Brazilian soils at multiple length scales, from a few microns to millimeters, and soil particle size distributions were calculated with unmatched precision. The analysis included the Amazonian soil ``Terra Mulata de fndio'' (TMI), an anthropogenic soil (Anthrosol) with sustained fertility and a large amount of stabilized organic matter. Firstly, the soils were imaged ex situ, without any chemical processing, with sequential electron scanning of the pelletized soil samples, covering a total area of 8 x 8 mm. Secondly, it was performed a computational analysis of the large-field X-ray images assembled from hundreds of adjacent elemental maps, thus resulting in high-definition images (4800 x 4800 pixels). This analytical approach provides a large sampling with the identification of > 10,000 particles over the scanned area. The particles identified consisted of Al, C, Ca, Cr, F, Fe, Mg, Mn, Na, 0, P, S, Si and Ti. A significantly larger concentration of C-, Ca- and P-based particles, of up to 100 mu m(2) of cross-section area, was found in TMI samples in comparison with oxisol and ultisol soils. While the mean distance between neighboring C, Ca and P particles in TMI was of 40-70 mu m, the value was of hundreds of microns in oxisol and ultisol. Furthermore, mapping of micrometric carbon particles by Raman spectroscopy indicated that they have a graphitic structure with a large amount of defects, partially associated with particle oxidation, although a well-preserved sp(2) graphitic structure is also present. From a technological perspective, improved soil amendments, such as biochar, can be rationally designed from the ``fingerprint'' described here for soil particles of Amazonian Anthrosols (i.e., morphological and structural characteristics), which can result in an increase in fertility and the optimization of carbon sequestration in the future.}, added-at = {2022-05-23T20:00:14.000+0200}, address = {RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS}, author = {Oliveira, Naiara C and Paschoal, Alexandre R and Paula, Ricardo J and Constantino, Isabela C and Bisinoti, Marcia C and Moreira, Altair B and Fregolente, Lais G and Santana, Ariane M and Sousa, Francisco A and Ferreira, Odair P and Paula, Amauri J}, biburl = {https://www.bibsonomy.org/bibtex/2dffc05ab6c8c21b2e590060d1461a62b/ppgfis_ufc_br}, doi = {10.1016/j.geoderma.2017.09.034}, interhash = {0974dac3478172cb1f970ce167162257}, intrahash = {dffc05ab6c8c21b2e590060d1461a62b}, issn = {0016-7061}, journal = {GEODERMA}, keywords = {Carbon Indio; Indio} Mulata Preta Soil Sustained Terra amendments; de dispersive energy fertility; sequestration; spectroscopy; {X-ray}, pages = {58-66}, publisher = {ELSEVIER}, pubstate = {published}, timestamp = {2022-05-23T20:00:14.000+0200}, title = {Morphological analysis of soil particles at multiple length-scale reveals nutrient stocks of Amazonian Anthrosols}, tppubtype = {article}, volume = 311, year = 2018 }