Nature of organic nitrogen in fine particle size separates of sandy soils of highly industrialized areas as revealed by NMR spectroscopy

Nature of organic nitrogen in fine particle size separates of sandy soils of highly industrialized areas as revealed by NMR spectroscopy

12 pages, 2 figures, 8 tables, 45 references.

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Bibliographic Details
Main Authors: Knicker, Heike, Schmidt, M. W. I., Kögel-Knabner, I.
Other Authors: German Research Foundation
Format: artículo biblioteca
Language:English
Published: Elsevier 2000-02
Subjects:Solid-state 13C and 15N NMR spectroscopy, Particle size separates, Soil organic matter,
Online Access:http://hdl.handle.net/10261/82400
http://dx.doi.org/10.13039/501100001659
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spelling dig-irnas-es-10261-824002018-09-12T11:56:54Z Nature of organic nitrogen in fine particle size separates of sandy soils of highly industrialized areas as revealed by NMR spectroscopy Knicker, Heike Schmidt, M. W. I. Kögel-Knabner, I. German Research Foundation Solid-state 13C and 15N NMR spectroscopy Particle size separates Soil organic matter 12 pages, 2 figures, 8 tables, 45 references. The structure of nitrogen-containing compounds of the fine particle size fractions (<20 μm) of two Podzols obtained from the highly industrialized Ruhr area in Germany, were examined by means of solid-state 15N nuclear magnetic resonance (NMR) spectroscopy. In order to improve the signal-to-noise ratio of the spectra, the samples were treated with hydrofluoric acid (HF), prior to NMR analysis. Comparing the solid-state 15N NMR spectra of plant incubates obtained before and after HF treatment revealed no major alteration of the nitrogen fraction induced by HF. From 60 to 90% of the nitrogen detectable in the solid-state 15N NMR spectra of the soil particle size fractions were assigned to amides. A smaller signal derives from free amino groups, leading to the conclusion that most of the nitrogen was derived from peptide-like structures. The calculated high contribution of peptides to the total organic carbon and nitrogen of the samples confirms earlier studies demonstrating that peptide-like material plays a more important role in refractory soil organic matter formation than commonly thought. Major contributions of N-containing heterocyclic aromatic compounds, formed by recondensation reactions or deriving from the input of coal and soot particles from coal processing industries, were not identified. Obviously, in these fractions, contamination did not significantly alter the chemical composition of the organic nitrogen. Financial support was obtained from the Deutsche Forschungsgemeinschaft. Peer reviewed 2013-09-19T13:37:46Z 2013-09-19T13:37:46Z 2000-02 artículo http://purl.org/coar/resource_type/c_6501 Soil Biology and Biochemistry 32 (2): 241–252 (2000) 0038-0717 http://hdl.handle.net/10261/82400 10.1016/S0038-0717(99)00154-6 http://dx.doi.org/10.13039/501100001659 en http://dx.doi.org/10.1016/S0038-0717(99)00154-6 none Elsevier
institution IRNAS ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-irnas-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del IRNAS España
language English
topic Solid-state 13C and 15N NMR spectroscopy
Particle size separates
Soil organic matter
Solid-state 13C and 15N NMR spectroscopy
Particle size separates
Soil organic matter
spellingShingle Solid-state 13C and 15N NMR spectroscopy
Particle size separates
Soil organic matter
Solid-state 13C and 15N NMR spectroscopy
Particle size separates
Soil organic matter
Knicker, Heike
Schmidt, M. W. I.
Kögel-Knabner, I.
Nature of organic nitrogen in fine particle size separates of sandy soils of highly industrialized areas as revealed by NMR spectroscopy
description 12 pages, 2 figures, 8 tables, 45 references.
author2 German Research Foundation
author_facet German Research Foundation
Knicker, Heike
Schmidt, M. W. I.
Kögel-Knabner, I.
format artículo
topic_facet Solid-state 13C and 15N NMR spectroscopy
Particle size separates
Soil organic matter
author Knicker, Heike
Schmidt, M. W. I.
Kögel-Knabner, I.
author_sort Knicker, Heike
title Nature of organic nitrogen in fine particle size separates of sandy soils of highly industrialized areas as revealed by NMR spectroscopy
title_short Nature of organic nitrogen in fine particle size separates of sandy soils of highly industrialized areas as revealed by NMR spectroscopy
title_full Nature of organic nitrogen in fine particle size separates of sandy soils of highly industrialized areas as revealed by NMR spectroscopy
title_fullStr Nature of organic nitrogen in fine particle size separates of sandy soils of highly industrialized areas as revealed by NMR spectroscopy
title_full_unstemmed Nature of organic nitrogen in fine particle size separates of sandy soils of highly industrialized areas as revealed by NMR spectroscopy
title_sort nature of organic nitrogen in fine particle size separates of sandy soils of highly industrialized areas as revealed by nmr spectroscopy
publisher Elsevier
publishDate 2000-02
url http://hdl.handle.net/10261/82400
http://dx.doi.org/10.13039/501100001659
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AT schmidtmwi natureoforganicnitrogeninfineparticlesizeseparatesofsandysoilsofhighlyindustrializedareasasrevealedbynmrspectroscopy
AT kogelknabneri natureoforganicnitrogeninfineparticlesizeseparatesofsandysoilsofhighlyindustrializedareasasrevealedbynmrspectroscopy
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