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Insights into the composition of humin from an irish grassland soil. Author(s): NOVOTNY, E. H. Humin is defined as the fraction of the humic substances (HS) that is insoluble in aqueous solution at any pH value (1). Because of its insolubility it has been the least studied of all the humic frac... ... Repository: BDPA Publication year: 2008
Char and humin fractions in Amazonian dark earths. Author(s): SONG, G.; NOVOTNY, E. H.; HAYES, M. H. B.; AZEVEDO, E. R. de; BONAGAMBA, T. J. The high and specific SOM contents of the Amazonian Dark Earths (ADE, Terra Preta de Índios), and their high contents of P and Ca provide high natural fertility to the soils. Char or black carbon (B C... ... Repository: BDPA Publication year: 2008
Extraction and characterisation of humin fraction from Amazonian anthropogenic dark earth soils ("Terra Preta de Indios"). Author(s): NOVOTNY, E. H. Humin, the humic fraction that is insoluble in water at all pH values, typically comprises more than 50% of soil organic matter (1). Because of the difficulties in isolation, humin compositions and pr... ... Repository: BDPA Publication year: 2008
Composition of the humin fraction and coarse char of Terra Preta de Índios soils by NMR, multivariate curve resolution and scanning electron microscopy. Author(s): SONG, G.; NOVOTNY, E. H.; AZEVEDO, E. R. de; BONAGAMBA, T. J. The high and specific soil organic matter (SOM) contents of the Amazonian Dark Earths (Terra Preta de Índios), and their high contents of P and Ca provide high natural fertility to the soils. Biochar... ... Repository: BDPA Publication year: 2008
Soil carbon sequestration in agricultural areas: evaluation of C content and features of soil organic matter by laser photonic techniques. Author(s): OLIVEIRA, P. P. A.; PEZZOPANE, J. R. M.; BERNARDI, A. C. de C.; MILORI, D. M. B. P.; MARTIN NETO, L. Low-C-emission agriculture is essential for its sustainable growth, which aims at higher production with a low or zero C emission balance. Repository: BDPA Publication year: 2022
Carbon distribution in humic substance fractions extracted from soils treated with charcoal (biochar). Author(s): MADARI, B. E.; LIMA, L. B.; SILVA, M. A. S.; NOVOTNY, E. H.; ALCANTARA, F. A. de; CARVALHO, M. T. M.; PETTER, F. A. Biochar incorporation into the soil is a proposed C sequestration strategy. How newly applied biochar affects C accumulation in the soil is therefore a relevant question. This study presents part of t... ... Repository: BDPA Publication year: 2013
Evolution of maize residues into SOM in a study of two years incubation. Author(s): SONG, G. X.; NOVOTNY, E. H.; HAYES, M. H. B. Maize (Zea mays, a C4 plant) stover was incubated in a long-term cultivated soil for 24 months in order to better understand the transformation of crop residues into soil organic matter. Humic fractio... ... Repository: BDPA Publication year: 2018
EPR and DRIFT spectroscopic characterization of humic fractions during composting of sawdust and paper mill sludge. Author(s): MAIA, C. M. B. de F.; FUKAMACHI, C. R. B.; PICCOLO, A.; MANGRICH, A. S. The spectroscopic characteristics (DRIFT, UV-visible and EPR) of humic fractions were studied during composting of sawdust and paper mill sludge. Infrared spectroscopy reveals a compost rich in hydrox... ... Repository: BDPA Publication year: 2012
Humic substance fractions and attributes of histosols and related high-organic-matter soils form Brazil. Knowledge of the distribution of soil organic matter (SOM) fractions is important in managing soils toward a sustainable agricultural system ina tropical environment, However, data on Histosols in lim... ... Repository: BDPA Publication year: 2007
The role of the humic substances in the fractioning of heavy metals in Rodrigo de Freitas Lagoon, Rio de Janeiro - Brazil. Author(s): BALIEIRO, F. C. One of the main results of the processes related to urbanization is the contamination of the adjacent water bodies. Inserted in this context, the Rodrigo de Freitas lagoon is situated in the south zon... ... Repository: BDPA Publication year: 2014

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