Optical characterization of the organic matter of an Andisol of the East of Antioquia, Colombia
The optical characterization of the organic matter (OM) of an Andisol obtained from selective and sequential extractions of Al, Fe and Si (potassium chloride, sodium pyrophosphate, ammonium acid oxalate, dithionite-citrate-bicarbonate and sodium hydroxide) was made. From the absorbances the E4/E6 ra...
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| Format: | Article |
| Language: | Spanish |
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Universidad Nacional de Colombia, sede Medellín
2018-01-01
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| Series: | Revista de la Facultad de Ciencias |
| Subjects: | |
| Online Access: | https://revistas.unal.edu.co/index.php/rfc/article/view/68243 |
| _version_ | 1818238976356515840 |
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| author | Nicolás Pérez Echavarría Daniel Francisco Jaramillo Jaramillo Orlando Simón Ruíz Villadiego Luis Norberto Parra Sánchez |
| author_facet | Nicolás Pérez Echavarría Daniel Francisco Jaramillo Jaramillo Orlando Simón Ruíz Villadiego Luis Norberto Parra Sánchez |
| author_sort | Nicolás Pérez Echavarría |
| collection | DOAJ |
| description | The optical characterization of the organic matter (OM) of an Andisol obtained from selective and sequential extractions of Al, Fe and Si (potassium chloride, sodium pyrophosphate, ammonium acid oxalate, dithionite-citrate-bicarbonate and sodium hydroxide) was made. From the absorbances the E4/E6 ratio, the Δ log K, the Melanic Index (MI) and the ODOE were calculated. The behaviors of the E4/E6 ratio, the Δ log K and the MI in the extracts obtained with sodium pyrophosphate and with ammonium acid oxalate showed a higher degree of humification for the organic matter extracted from the A and 2B/A horizons and one smaller for the one extracted from the 3C/A and 4Bs horizons. The ODOE showed the presence of organic complexes in the extracts obtained with pyrophosphate and with sodium hydroxide and the iluvial accumulation of non-crystalline Fe oxides and hydroxides in the 4Bs horizon in the extract obtained with ammonium acid oxalate. In the horizon A, the humification indexes marked a change in the degree of evolution of the MO between 8 and 10 cm of depth, which could indicate the presence of a lithological discontinuity or of buried soil. |
| first_indexed | 2024-12-12T12:50:12Z |
| format | Article |
| id | doaj.art-1c917dba39ff492a935101858e976d09 |
| institution | Directory Open Access Journal |
| issn | 0121-747X 2357-5549 |
| language | Spanish |
| last_indexed | 2024-12-12T12:50:12Z |
| publishDate | 2018-01-01 |
| publisher | Universidad Nacional de Colombia, sede Medellín |
| record_format | Article |
| series | Revista de la Facultad de Ciencias |
| spelling | doaj.art-1c917dba39ff492a935101858e976d092022-12-22T00:24:00ZspaUniversidad Nacional de Colombia, sede MedellínRevista de la Facultad de Ciencias0121-747X2357-55492018-01-0171405510.15446/rev.fac.cienc.v7n1.6824347397Optical characterization of the organic matter of an Andisol of the East of Antioquia, ColombiaNicolás Pérez Echavarría0Daniel Francisco Jaramillo Jaramillo1Orlando Simón Ruíz Villadiego2Luis Norberto Parra Sánchez3Universidad Nacional de Colombia Sede MedellínUniversidad Nacional de Colombia Sede MedellínUniversidad Nacional de Colombia Sede MedellínUniversidad Nacional de Colombia Sede MedellínThe optical characterization of the organic matter (OM) of an Andisol obtained from selective and sequential extractions of Al, Fe and Si (potassium chloride, sodium pyrophosphate, ammonium acid oxalate, dithionite-citrate-bicarbonate and sodium hydroxide) was made. From the absorbances the E4/E6 ratio, the Δ log K, the Melanic Index (MI) and the ODOE were calculated. The behaviors of the E4/E6 ratio, the Δ log K and the MI in the extracts obtained with sodium pyrophosphate and with ammonium acid oxalate showed a higher degree of humification for the organic matter extracted from the A and 2B/A horizons and one smaller for the one extracted from the 3C/A and 4Bs horizons. The ODOE showed the presence of organic complexes in the extracts obtained with pyrophosphate and with sodium hydroxide and the iluvial accumulation of non-crystalline Fe oxides and hydroxides in the 4Bs horizon in the extract obtained with ammonium acid oxalate. In the horizon A, the humification indexes marked a change in the degree of evolution of the MO between 8 and 10 cm of depth, which could indicate the presence of a lithological discontinuity or of buried soil.https://revistas.unal.edu.co/index.php/rfc/article/view/68243Andisolcaracterización ópticamateria orgánicaíndices de humificaciónextracciones selectivas de Al, Fe y Si. |
| spellingShingle | Nicolás Pérez Echavarría Daniel Francisco Jaramillo Jaramillo Orlando Simón Ruíz Villadiego Luis Norberto Parra Sánchez Optical characterization of the organic matter of an Andisol of the East of Antioquia, Colombia Revista de la Facultad de Ciencias Andisol caracterización óptica materia orgánica índices de humificación extracciones selectivas de Al, Fe y Si. |
| title | Optical characterization of the organic matter of an Andisol of the East of Antioquia, Colombia |
| title_full | Optical characterization of the organic matter of an Andisol of the East of Antioquia, Colombia |
| title_fullStr | Optical characterization of the organic matter of an Andisol of the East of Antioquia, Colombia |
| title_full_unstemmed | Optical characterization of the organic matter of an Andisol of the East of Antioquia, Colombia |
| title_short | Optical characterization of the organic matter of an Andisol of the East of Antioquia, Colombia |
| title_sort | optical characterization of the organic matter of an andisol of the east of antioquia colombia |
| topic | Andisol caracterización óptica materia orgánica índices de humificación extracciones selectivas de Al, Fe y Si. |
| url | https://revistas.unal.edu.co/index.php/rfc/article/view/68243 |
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