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| Format: | Artículo científico |
| Language: | en |
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Universidad Nacional de Colombia
2017
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| Online Access: | https://www.redalyc.org/articulo.oa?id=169951832016 https://www.redalyc.org/journal/1699/169951832016/ https://www.redalyc.org/journal/1699/169951832016/html/ https://www.redalyc.org/journal/1699/169951832016/169951832016.epub https://www.redalyc.org/journal/1699/169951832016/movil |
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Table of Contents:
- Analytical methods comparison for soil organic carbon determination in Andean Forest of Sangay National Park- Ecuador Franklin Enrique Cargua Catagña Marco Vinicio Rodríguez Llerena Diego Armando Damián Carrión Celso Guillermo Recalde Moreno Guido Patricio Santillán Lima Agrociencias LOI DUMAS combustion Calcination organic material A relationship among total organic carbon content determined by ignition loss (LOI) and DUMAS combustion methods, were perfomed in evergreen Andean eyebrow forest soils, southwestern zone of Sangay National Park- Ecuador, where three conglomerates were established as follows: (C) with five plots (P) with plots of 20 x 20 m. In each plot, five digging trenches and four soil samples were carried out at different depths: 0-10, 10-20, 20-30 and> 30 cm, respectively. It is observed that the amount of total organic carbon obtained by the DUMAS and LOI method (R 2 = 0.99) does not differ significantly. However, the DUMAS total organic carbon determination methodology showed greater precision with regard to LOI, thus becoming a good alternative to be used as a reference method. In addition, the operability in the laboratory is reflected in the reduction of time and optimization of the human resource. The correlation level shows a low level of significance among these methods, the variation is greater in the DUMAS method (3.38%), due to the analyzed volumes of the samples and the auxiliary equipment level of precision. Keywords: Calcination, combustion, DUMAS, LOI, organic material. A relationship among total organic carbon content determined by ignition loss (LOI) and DUMAS combustion methods, were perfomed in evergreen Andean eyebrow forest soils, southwestern zone of Sangay National Park- Ecuador, where three conglomerates were established as follows: (C) with five plots (P) with plots of 20 x 20 m. In each plot, five digging trenches and four soil samples were carried out at different depths: 0-10, 10-20, 20-30 and> 30 cm, respectively. It is observed that the amount of total organic carbon obtained by the DUMAS and LOI method (R 2 = 0.99) does not differ significantly. However, the DUMAS total organic carbon determination methodology showed greater precision with regard to LOI, thus becoming a good alternative to be used as a reference method. In addition, the operability in the laboratory is reflected in the reduction of time and optimization of the human resource. The correlation level shows a low level of significance among these methods, the variation is greater in the DUMAS method (3.38%), due to the analyzed volumes of the samples and the auxiliary equipment level of precision. 2017 artículo científico 0120-2812 https://www.redalyc.org/articulo.oa?id=169951832016 https://www.redalyc.org/journal/1699/169951832016/ https://www.redalyc.org/journal/1699/169951832016/html/ https://www.redalyc.org/journal/1699/169951832016/169951832016.epub https://www.redalyc.org/journal/1699/169951832016/movil en http://www.redalyc.org/revista.oa?id=1699 Acta Agronómica application/pdf Universidad Nacional de Colombia Acta Agronómica (Colombia) Num.3 Vol.66