English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/158912
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Graphical statistical approach to soil organic matter resilience using analytical pyrolysis data

AuthorsAlmendros Martín, Gonzalo ; Hernández, Zulimar ; Sanz Perucha, Jesús ; Rodríguez-Sánchez, Sonia ; Jiménez González, M. A.; González-Pérez, José Antonio
KeywordsAtomic ratiosPartial least squares regression Pyrolysis-gas chromatography-mass spectrometry Soil organic matter Total mineralization coefficient Van Krevelen diagram
Partial least squares regression
Pyrolysis-gas chromatography-mass spectrometry
Soil organic matter
Total mineralization coefficient Van Krevelen diagram
Issue Date11-Jan-2018
PublisherElsevier
CitationJournal of Chromatography A (1533) 164-173 (2018)
AbstractPyrolysis-gas chromatography-mass spectrometry (Py-GC-MS) of humic acids (HAs) from 30 agricultural soils from a volcanic island (Tenerife, Spain) was used to discern the molecular characteristics of soil organic matter (SOM) associated to resilience. For faster perceptual identification of the results, the yields of the pyrolysis products in the form of surface density plots were compared in an update of the Van Krevelen graphical statistical method. This approach, with respect to data reduction and visualization, was also used to collectively represent statistical indices that were obtained after simple and partial least squares (PLS) regression. The resulting plots illustrate different SOM structural domains (for example, carbohydrate- and lignin-derived and condensed lipid). The content of SOM and total mineralization coefficient (TMC) values can be well estimated from the relative abundance of 57 major pyrolysis compounds: SOM content and composition parallels the accumulation of lignin- and carbohydrate-derived structures (lignocellulosic material) and the depletion of condensed polyalkyl structures. In other words, in the volcanic ash soils that were studied, we found that the higher the amount of SOM, the lower its quality in terms of resilience. Although no cause-and-effect is inferred from this fact, it is evident that the resistance to biodegradation of the SOM is related to its molecular composition
Description10 páginas.-- 5 figuras.-- 2 tablas.-- 42 referencias
Publisher version (URL)https://doi.org/10.1016/j.chroma.2017.12.015
URIhttp://hdl.handle.net/10261/158912
DOI10.1016/j.chroma.2017.12.015
ISSN0021-9673
Appears in Collections:(IRNAS) Artículos
(MNCN) Artículos
(IQOG) Artículos
Files in This Item:
File Description SizeFormat 
graphical_statistical_approach_2018_Postprint.pdf Embargoed until January 11, 20201,92 MBAdobe PDFThumbnail
View/Open    Request a copy
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.