Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/58585
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Campo DC | Valor | Lengua/Idioma |
---|---|---|
dc.contributor.author | González-Vila, Francisco Javier | - |
dc.contributor.author | Almendros Martín, Gonzalo | - |
dc.contributor.author | Tinoco, Pilar | - |
dc.date.accessioned | 2012-10-22T12:04:12Z | - |
dc.date.available | 2012-10-22T12:04:12Z | - |
dc.date.issued | 2001 | - |
dc.identifier | doi: 10.1016/S0165-2370(00)00139-X | - |
dc.identifier | issn: 0165-2370 | - |
dc.identifier.citation | Journal of Analytical and Applied Pyrolysis 58-59: 329- 339 (2001) | - |
dc.identifier.uri | http://hdl.handle.net/10261/58585 | - |
dc.description.abstract | A mixture of urban waste, wheat straw and K 15NO3 was subjected to 80-day laboratory composting in order to analyse the qualitative and quantitative speciation patterns of the newly formed N compounds in the different compost fractions, i.e. water-soluble fraction (WS), colloidal fractions - humic acid-like (HA) and fulvic acid-like (FA), and alkali-insoluble organic fractions. In a further experiment, the compost was added to a mineral soil (3.1 g compost per 100 g soil), which was subjected to additional incubation for 80 days. The above organic fractions in addition to two particulate ones were isolated from the soil. The stable isotope ratios (15N/14N) of the resulting compost (incorporating 21.8% N as 15N) and soil fractions were analysed to monitor the distribution of the N in the different soil organo-mineral compartments. Finally, a preliminary identification of the major groups of nitrogen-bearing molecules in soil and compost fractions was carried out by Curie-point analytical pyrolysis. It was found that, after the incubation experiments, most of the newly formed N-compounds tend to concentrate in the alkali-insoluble residue (30% 15N enrichment) but, about 28% of the N remains in colloidal fractions (HA+FA). Upon pyrolysis, the FA yielded typical anhydrosugar and furan compounds suggesting an origin from carbohydrate material. The 15N in this soil fraction amount to 0.7% total soil nitrogen (TSN) (up to 9% of the N from the nitrate added). The HA showed a similar composition, but comparatively released higher amounts of carbohydrate-derived products, typical methoxyphenols and some nitrogen-containing compounds, suggesting a lignoprotein content (9% N derived from the nitrate added=1.7% of the TSN). The WS showed a very complex composition yielding after pyrolysis a series of methoxyphenols and carbohydrate-derived products and substantial yields of fatty acids. The slight differences between the pyrolytic patterns of the different soil and compost fractions suggest a predominantly physical incorporation of the compost to the soil, as well as a non-selective biodegradation of the different C and N forms. The isotopic ratios indicate that the tendency for accumulation of stable N forms followed the order soluble < colloidal < particulate soil fractions. | - |
dc.description.sponsorship | The Spanish CICyT for financial support (grant AMB99-0907) | - |
dc.language.iso | eng | - |
dc.publisher | Elsevier | - |
dc.rights | closedAccess | - |
dc.title | Nitrogen speciation and pyrolytic patterns of 15N-labelled soil and compost fractions | - |
dc.type | artículo | - |
dc.identifier.doi | 10.1016/S0165-2370(00)00139-X | - |
dc.date.updated | 2012-10-22T12:04:12Z | - |
dc.description.version | Peer Reviewed | - |
dc.contributor.funder | Comisión Interministerial de Ciencia y Tecnología, CICYT (España) | - |
dc.identifier.funder | http://dx.doi.org/10.13039/501100007273 | es_ES |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.openairetype | artículo | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | none | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | No Fulltext | - |
Aparece en las colecciones: | (IRNAS) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
accesoRestringido.pdf | 15,38 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
14
checked on 25-mar-2024
WEB OF SCIENCETM
Citations
13
checked on 21-feb-2024
Page view(s)
253
checked on 28-mar-2024
Download(s)
93
checked on 28-mar-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.