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Archaeological wood characterisation by PY/GC/MS, GC/MS, NMR and GPC techniques

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Title: Archaeological wood characterisation by PY/GC/MS, GC/MS, NMR and GPC techniques
Authors: Colombini, M.P.1 perla@dcci.unipi.it, Orlandi, M.2, Modugno, F.1, Tolppa, E.-L.2, Sardelli, M.1, Zoia, L.2, Crestini, C.3
Source: Microchemical Journal. Jan2007, Vol. 85 Issue 1, p164-173. 10p.
Subjects: Nuclear magnetic resonance, Chromatographic analysis, Alcohol, Pinaceae
Abstract: Abstract: The chemical characterisation of waterlogged archaeological wood is of paramount importance in terms of understanding not only the degradation processes of wood in artistic and archaeological objects but also the development of consolidation and conservation procedures. The two different types of archaeological waterlogged wood were characterized using several analytical techniques. The analytical protocol consists in using PY/GC/MS with in situ derivatisation with hexamethyldisilazane, GC/MS of the extractives, 1H, 13C and 31P NMR analysis, and GPC. The main results showed that one of the ancient samples was a gymnosperm wood from the Pinaceae family, whereas the other type of wood was an angiosperm. Lignin from the angiosperm was oxidised in a benzylic position of β-O-4 to give oxo functional groups, in primary alcohol moiety to give carboxylic groups. In addition, the formation of a new intermonomeric bond 5-O-4 was observed. [Copyright &y& Elsevier]
Copyright of Microchemical Journal is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 23449969
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Archaeological wood characterisation by PY/GC/MS, GC/MS, NMR and GPC techniques
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  Data: <searchLink fieldCode="AR" term="%22Colombini%2C+M%2EP%2E%22">Colombini, M.P.</searchLink><relatesTo>1</relatesTo><i> perla@dcci.unipi.it</i><br /><searchLink fieldCode="AR" term="%22Orlandi%2C+M%2E%22">Orlandi, M.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Modugno%2C+F%2E%22">Modugno, F.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Tolppa%2C+E%2E-L%2E%22">Tolppa, E.-L.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Sardelli%2C+M%2E%22">Sardelli, M.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Zoia%2C+L%2E%22">Zoia, L.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Crestini%2C+C%2E%22">Crestini, C.</searchLink><relatesTo>3</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Microchemical+Journal%22">Microchemical Journal</searchLink>. Jan2007, Vol. 85 Issue 1, p164-173. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Nuclear+magnetic+resonance%22">Nuclear magnetic resonance</searchLink><br /><searchLink fieldCode="DE" term="%22Chromatographic+analysis%22">Chromatographic analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Alcohol%22">Alcohol</searchLink><br /><searchLink fieldCode="DE" term="%22Pinaceae%22">Pinaceae</searchLink>
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  Data: Abstract: The chemical characterisation of waterlogged archaeological wood is of paramount importance in terms of understanding not only the degradation processes of wood in artistic and archaeological objects but also the development of consolidation and conservation procedures. The two different types of archaeological waterlogged wood were characterized using several analytical techniques. The analytical protocol consists in using PY/GC/MS with in situ derivatisation with hexamethyldisilazane, GC/MS of the extractives, 1H, 13C and 31P NMR analysis, and GPC. The main results showed that one of the ancient samples was a gymnosperm wood from the Pinaceae family, whereas the other type of wood was an angiosperm. Lignin from the angiosperm was oxidised in a benzylic position of β-O-4 to give oxo functional groups, in primary alcohol moiety to give carboxylic groups. In addition, the formation of a new intermonomeric bond 5-O-4 was observed. [Copyright &y& Elsevier]
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  Data: <i>Copyright of Microchemical Journal is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.microc.2006.05.001
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      – Code: eng
        Text: English
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      – SubjectFull: Nuclear magnetic resonance
        Type: general
      – SubjectFull: Chromatographic analysis
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      – SubjectFull: Alcohol
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      – SubjectFull: Pinaceae
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              Text: Jan2007
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