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dc.contributor.authorMathers, Nicoleen_US
dc.contributor.authorXu, Zhihongen_US
dc.contributor.authorBerners-Price, Sueen_US
dc.contributor.authorSaffigna, Paulen_US
dc.contributor.editorJenny Fegenten_US
dc.date.accessioned2017-05-03T11:31:22Z
dc.date.available2017-05-03T11:31:22Z
dc.date.issued2002en_US
dc.date.modified2009-09-02T07:42:35Z
dc.identifier.issn00049573en_US
dc.identifier.doi10.1071/SR01073en_AU
dc.identifier.urihttp://hdl.handle.net/10072/6755
dc.description.abstractHydrofluoric acid (HF) was used to pre-treat forest soils of south-east Queensland for assessing the effectiveness of iron (Fe) removal, carbon (C) composition using 13C cross-polarisation (CP) with magic-angle-spinning (MAS) nuclear magnetic resonance (NMR) before and after the HF pre-treatment, and the improvement of 13C CPMAS NMR spectra. Soil samples were collected from 4 experimental sites of different soil types, harvest residue management or prescribed burning, and tree species. More than 86% of Fe was in all soil types removed by the HF treatment. The 13C NMR spectral quality was improved with increased resolution, especially in the alkyl C and O-alkyl C regions, and reduced NMR run-time (1-5 h per sample compared with >20 h per sample without the pre-treatment). The C composition appeared to alter slightly after the pre-treatment, but this might be largely due to improved spectrometer conditions and increased resolution leading to more accurate NMR spectral integration. Organic C recovery after HF pre-treatment varied with soil types and forest management, and soluble soil organic matter (SOM) could be lost during the pre-treatment. The Fourier Transform-Infrared (FT-IR) spectra of HF extracts indicated the preferential removal of carboxylic C groups during the pre-treatment, but this could also be due to adsorbed water on the mineral matter. The NMR spectra revealed some changes in C composition and quality due to residue management and decomposition. Overall, the HF treatment was a useful pre-treatment for obtaining semi-quantitative 13C CPMAS NMR spectra of subtropical Australian forest soils.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_AU
dc.languageEnglishen_US
dc.language.isoen_AU
dc.publisherCSIRO Publishingen_US
dc.publisher.placeMelbourneen_US
dc.publisher.urihttp://www.publish.csiro.au/nid/84.htmen_AU
dc.relation.ispartofpagefrom655en_US
dc.relation.ispartofpageto674en_US
dc.relation.ispartofjournalAustralian Journal of Soil Researchen_US
dc.relation.ispartofvolume40en_US
dc.subject.fieldofresearchcode300103en_US
dc.titleHydrofluoric acid pre-treatment for improving 13C CPMAS NMR spectral quality of forest soils in south-east Queensland, Australia.en_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.facultyGriffith Sciences, Griffith School of Environmenten_US
gro.rights.copyrightCopyright 2002 CSIRO. Please refer to the journal's website for access to the definitive, published version.en_AU
gro.date.issued2002
gro.hasfulltextNo Full Text


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