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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
01/12/2022 |
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Data da última atualização: |
02/12/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SANTOS, S. R. dos; SCHELLEKENS, J.; SILVA, W. T. L. da; BUURMAN, P.; BOIM, A. G. F.; VIDAL-TORRADO, P. |
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Afiliação: |
WILSON TADEU LOPES DA SILVA, CNPDIA. |
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Título: |
Selective sorption and desorption of DOM in podzol horizons FTIR and Py-GC/MS of leachates from a column experiment. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Science of the Total Environment, v. 826, a154144, 2022. |
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Páginas: |
1 - 12 |
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ISSN: |
0048-9697 |
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DOI: |
http://dx.doi.org/10.1016/j.scitotenv.2022.154144 |
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Idioma: |
Inglês |
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Conteúdo: |
The sorption of dissolved organic matter (DOM) depends on its interaction with the soil matrix. In hydromorphic podzols, DOM reacts mainly with aluminium (Al), which is responsible for the formation of the Bh-horizon in the subsoil. In this work, we investigated whether the retention of DOM in the soil during the podzolization process is selective in relation to the molecular composition of DOM. A column experiment was conducted to study the selective retention of sorption and desorption processes under controlled conditions. Materials used in the column experiment were representative for Brazilian coastal podzols under tropical rainforest. Materials were collected from this tropical coastal podzol ecosystem, and included soil from E- and Bh-horizons, and DOM from a stream (Stream), peat water (Peat), litter (Litter) and charred litter (Char). To evaluate selective retention of DOM, both the initial DOM and its leachates were analyzed by Fourier transform infrared spectra absorption (FTIR) and pyrolysis gas-chromatography/mass spectrometry (Py-GC/MS). The results showed preferential retention of DOM associated with biopolymers for soil columns with E-horizon material (E), E with Al nitrate (E-n), E with kaolinite (E-k) and E with gibbsite (E-h), except for Char. The composition of leachates after percolation through B horizon columns was mainly determined by desorption, and had a relatively large contribution from phenolic and carboxylic groups associated with Al and low molecular weight aromatic and N-containing pyrolysis products, while products from macromolecular materials such as cellulose were selectively retained in the columns for all DOM types. DOM from the Stream (taken during the rainy season) resembled that of desorbed OM from the B columns, reinforcing substantial desorption in the field as well. Our results suggest that sorption and desorption of OM in the hydromorphic Bh-horizon is continuous and that the selectivity of sorption is dependent on DOM source MenosThe sorption of dissolved organic matter (DOM) depends on its interaction with the soil matrix. In hydromorphic podzols, DOM reacts mainly with aluminium (Al), which is responsible for the formation of the Bh-horizon in the subsoil. In this work, we investigated whether the retention of DOM in the soil during the podzolization process is selective in relation to the molecular composition of DOM. A column experiment was conducted to study the selective retention of sorption and desorption processes under controlled conditions. Materials used in the column experiment were representative for Brazilian coastal podzols under tropical rainforest. Materials were collected from this tropical coastal podzol ecosystem, and included soil from E- and Bh-horizons, and DOM from a stream (Stream), peat water (Peat), litter (Litter) and charred litter (Char). To evaluate selective retention of DOM, both the initial DOM and its leachates were analyzed by Fourier transform infrared spectra absorption (FTIR) and pyrolysis gas-chromatography/mass spectrometry (Py-GC/MS). The results showed preferential retention of DOM associated with biopolymers for soil columns with E-horizon material (E), E with Al nitrate (E-n), E with kaolinite (E-k) and E with gibbsite (E-h), except for Char. The composition of leachates after percolation through B horizon columns was mainly determined by desorption, and had a relatively large contribution from phenolic and carboxylic groups associated with Al and low mol... Mostrar Tudo |
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Palavras-Chave: |
DOM-metal binding properties; Natural organic matter; Podzolization; Tropical coastal podzols. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02862naa a2200265 a 4500
001 2149111
005 2022-12-02
008 2022 bl uuuu u00u1 u #d
022 $a0048-9697
024 7 $ahttp://dx.doi.org/10.1016/j.scitotenv.2022.154144$2DOI
100 1 $aSANTOS, S. R. dos
245 $aSelective sorption and desorption of DOM in podzol horizons FTIR and Py-GC/MS of leachates from a column experiment.$h[electronic resource]
260 $c2022
300 $a1 - 12
520 $aThe sorption of dissolved organic matter (DOM) depends on its interaction with the soil matrix. In hydromorphic podzols, DOM reacts mainly with aluminium (Al), which is responsible for the formation of the Bh-horizon in the subsoil. In this work, we investigated whether the retention of DOM in the soil during the podzolization process is selective in relation to the molecular composition of DOM. A column experiment was conducted to study the selective retention of sorption and desorption processes under controlled conditions. Materials used in the column experiment were representative for Brazilian coastal podzols under tropical rainforest. Materials were collected from this tropical coastal podzol ecosystem, and included soil from E- and Bh-horizons, and DOM from a stream (Stream), peat water (Peat), litter (Litter) and charred litter (Char). To evaluate selective retention of DOM, both the initial DOM and its leachates were analyzed by Fourier transform infrared spectra absorption (FTIR) and pyrolysis gas-chromatography/mass spectrometry (Py-GC/MS). The results showed preferential retention of DOM associated with biopolymers for soil columns with E-horizon material (E), E with Al nitrate (E-n), E with kaolinite (E-k) and E with gibbsite (E-h), except for Char. The composition of leachates after percolation through B horizon columns was mainly determined by desorption, and had a relatively large contribution from phenolic and carboxylic groups associated with Al and low molecular weight aromatic and N-containing pyrolysis products, while products from macromolecular materials such as cellulose were selectively retained in the columns for all DOM types. DOM from the Stream (taken during the rainy season) resembled that of desorbed OM from the B columns, reinforcing substantial desorption in the field as well. Our results suggest that sorption and desorption of OM in the hydromorphic Bh-horizon is continuous and that the selectivity of sorption is dependent on DOM source
653 $aDOM-metal binding properties
653 $aNatural organic matter
653 $aPodzolization
653 $aTropical coastal podzols
700 1 $aSCHELLEKENS, J.
700 1 $aSILVA, W. T. L. da
700 1 $aBUURMAN, P.
700 1 $aBOIM, A. G. F.
700 1 $aVIDAL-TORRADO, P.
773 $tScience of the Total Environment$gv. 826, a154144, 2022.
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| 1. |  | ROCHA, M. C.; DELIZA, R.; ROSA, C. L. S.; FREITAS, D. G. C.; SILVA, A. L. S.; ABBOUD, A. C. S.; CARMO, M. G. F. Novas cores e formas de tomate cereja ? elas são apreciadas pelo consumidor? In: SIMPÓSIO IBERO-AMERICANO EM ANÁLISE SENSORIAL, 6., 2010, São Paulo. Anais do simpósio. São Paulo: Associação Brasileira de Ciências Sensoriais, 2010. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| 2. | | ROSA, C. L. S.; FREITAS, D. G. C.; ROCHA, M. C.; SOARES, A. G.; ABBOUD, A. Qualidade de polpas concentradas de tomates 'heirloom' produzidos sob manejo orgânico. In: SIMPÓSIO LATINO AMERICANO DE CIÊNCIA DE ALIMENTOS, 9., 2011, Campinas. Ciência de alimentos e qualidade de vida: saúde, meio ambiente e sustentabilidade: resumos. Campinas: UNICAMP, FEA, 2011. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Agroindústria de Alimentos. |
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| Registros recuperados : 2 | |
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