Chemical characterization of the organic matter in forest soils by Curie point pyrolysis-GC/MS and pyrolysis-field ionization mass spectrometry

Hempfling, Reinhold; Schulten, H.–R.

doi:10.1016/0146-6380(90)90078-e

Cited by 142 publications

(57 citation statements)

References 34 publications

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“…No phenol, lignin-derived components, or long 291 chain alkanes/alkenes and acids, traditionally seen in the pyrolysis products of 292 natural soil OM (Hempfling and Schulten, 1990), were visible in the 293 archaeological soil layer. Lipids detected from GC-MS were diverse, yet present 294 in such low concentration as to render them negligible.…”

Section: Local Organic Background 289mentioning

confidence: 99%

Organic signatures of fireplaces: Experimental references for archaeological interpretations

Lejay

Alexis

Quénéa

et al. 2016

Organic Geochemistry

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International audienceThe use of fire is a well-established human practice, at least from the Late Pleistocene. The variability in fuel type highlights complex practices regarding fire technology throughout this period. This contribution provides the organic signatures from fireplaces and is based on a set of experimental studies using different types of fuel, notably bone and/or wood. Soil layers affected by fire operation were compared with soils unaffected by heating and soils impregnated with unburned bone fat. The carbon content and lipid and bulk organic matter (OM) composition were determined through organic carbon measurement, gas chromatography–mass spectrometry (GC–MS), as well as TMAH (tetramethylammonium hydroxide)-assisted pyrolysis (py) coupled to GC–MS

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Section: Local Organic Background 289mentioning

confidence: 99%

Organic signatures of fireplaces: Experimental references for archaeological interpretations

Lejay

Alexis

Quénéa

et al. 2016

Organic Geochemistry

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“…Interpretation of PyMS spectra Lists of specific marker fragments for the different plant polymers and other constituents have been presented before [22,37,39,40,43 ]. Therefore, only the ions mentioned in the text and those shown in the figures are mentioned, and where necessary their validity as marker ion will be discussed.…”

Section: Carnationmentioning

confidence: 99%

“…M\z 272, 302, 332, 358 and 388 are diguaiacyl-, guaiacyl\syringyl-and disyringyl-containing dimeric linin products, respectively [45 ]. Other identified dimeric lignin pyrolysis products are m\z 310, 312, 314, 316, 326, 328, 330, 340, 342, 346, 356, 370, 386, 400 and 418 [22,45,48 ]. M\z 279 in Fig.…”

Section: Carnationmentioning

confidence: 99%

Changes in chemical composition related to fungal infection and induced resistance in carnation and radish investigated by pyrolysis mass spectrometry

Steijl

Niemann

Boon

1999

Physiological and Molecular Plant Pathology

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Pseudomonas fluorescens WCR 417r induces systemic resistance in radish roots challenged by Fusarium oxysporum f. sp. raphani and, incidentally, in carnation stems challenged by Fusarium oxysporum f. sp. dianthi. The induced systemic resistance is not associated with accumulation of pathogenesis-related proteins (PRs) or, at least in case of radish, with increased peroxidase activity. We tested whether the induced systemic resistance might be associated with changes in the host cell wall composition. Cell wall degradation, using pyrolysis mass spectrometry, was demonstrated on fungal infection in carnation and probably in radish as well. Lignin was found to be demethoxylated, oxidized and depolymerized. In carnation both syringyl and guaiacyl lignin were broken down. In radish root probably mainly syringyl lignin was degraded. Cellulose and hemicellulose were degraded in carnation and possibly in radish. Bacterization with P. fluorescens WCS 417r prior to fungal infection reduced such cell wall degradation, consistent with its resistance inducing action. In the case of the radish roots it seems very improbable that this reduction is a necessary component of the induced fungal resistance. For carnation it remains to be investigated.

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“…302. 332, 328, 358, 388 and 418 are from dimeric pyrolysis products of lignin containing diguaiacyl, guaiacyl, syringyl and disyringyl units, Evans et al (1986), Hempfling and Schulten (1990) and van der Hage et aL (19931 assigned these masses to phenylcoumaran, phenylcoumarone, biphenyl, stilbene and rcsinol types of structures, The substituents for these subunits are identical to those identified l\)r .... ,"" "|'"',' "'T'"""T'" ! ;"-r'"'""r' "" ""'l "'",'"'r'",'"T'",'"'r "' ,'" ','"'""T'",'"'|"" ;" :';'"""" :r'","" "|"'" ," "'T"" L.,|,..-,.…”

Section: Chemical Analysis By Pyrolysis (Electron Ionication) Mass Spmentioning

confidence: 99%

“…monomeric pyrolysis products from lignin (Hempfling and Schulten, 1990). From the comparison of both mass spectra it is evident that dimers with a high degree of methoxy substitution (e.g.…”

Section: Oomentioning

confidence: 99%

A combined pyrolysis mass spectrometric and light microscopic study of peatified Calluna wood isolated from raised bog peat deposits

Heijden

Boon

1994

Organic Geochemistry

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A combined pyrolysis mass spectrometric and light microscopic study of peatified Calluna wood isolated from raised bog peat deposits van der Heyden, E.; Boon, J.J. (1994). A combined pyrolysis mass spectrometric and light microscopic study of peatified Calluna wood isolated from raised bog peat deposits. Organic Geochemistry, 22(6), 903-919. DOI: 10.1016/0146-6380(94)90028-0 General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. Download date: 10 May 2018 Pergamon 0146-6380(94)00095-6Org. Geochem. Vol. 22, No. 6, pp. 903-919, 1994 Copyright Abstract--Stem wood of the Angiosperm Calluna vulgaris (Scotch heather), isolated at different depths from a selection of raised bog peat deposits, was chemically characterized using in-source pyrolysis mass spectrometry (Py-MS) and Curie-point pyrolysis gas chromatography mass spectrometry (Py-GC-MS).Light microscopy was performed to relate mass spectrometric characteristics with anatomical features. Peatified wood samples, isolated from increasing depth show a gradual decrease in carbohydrate content. This decrease is anatomically reflected in a selective removal of secondary cell wall material from the fibre-tracheids and wood parenchyma. During prolonged peatification a selective removal of hemicellulose sugars is observed, while a part of the cellulose fraction is preserved. This highly resistant cellulose is mainly located in the secondary cell walls of the vessels. The lignin macromolecule is preserved, but a gradual decrease in syringyl to guaiacyl ratio (S/G) is observed during peatification. Because no increase in catechol and phenolic compounds is observed, we conclude that S/G shifts are due to the removal of syringyl-rich secondary cell wall material and the retention of guaiacyl-rich compound middle lamella, Small chemical changes in the lignin macromolecule involve shifts in oxygen substitutions on the aliphatic side chains of the methoxyphenolics and the occurrence of aromatic acids.

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Chemical characterization of the organic matter in forest soils by Curie point pyrolysis-GC/MS and pyrolysis-field ionization mass spectrometry

Cited by 142 publications

References 34 publications

Organic signatures of fireplaces: Experimental references for archaeological interpretations

Organic signatures of fireplaces: Experimental references for archaeological interpretations

Changes in chemical composition related to fungal infection and induced resistance in carnation and radish investigated by pyrolysis mass spectrometry

A combined pyrolysis mass spectrometric and light microscopic study of peatified Calluna wood isolated from raised bog peat deposits

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