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dc.contributor.authorEdwards, Howell G.M.
dc.contributor.authorHassan, N.F.
dc.contributor.authorWilson, Andrew S.
dc.date.accessioned2016-12-15T09:27:53Z
dc.date.available2016-12-15T09:27:53Z
dc.date.issued2004
dc.identifier.citationEdwards HGM, Hassan NF and Wilson AS (2004) Raman spectroscopic analyses of preserved historical specimens of human hair attributed to Robert Stephenson and Sir Isaac Newton. Analyst. 129(10): 956-962.en_US
dc.identifier.urihttp://hdl.handle.net/10454/10953
dc.descriptionNoen_US
dc.description.abstractThe Raman spectra of two historical specimens of human hair attributed to the engineer Robert Stephenson and scientist Sir Isaac Newton, preserved in private collections are reported. Comparisons are made with the Raman spectra of modern hair specimens and with hair from archaeological excavations. The hair spectra collected with a laser excitation of 785 nm are of a better quality than those collected using 1064 nm. The historical hair specimens are remarkably well-defined spectroscopically in terms of the amide I vibrational mode and the ν(SS), ascribed to a predominantly gauche–gauche–gauche CSSC conformation. The contrast with degraded hair specimens recovered from archaeological excavations is striking. The presence of a weak feature near 2590 cm−1 in the hair samples attributed to a ν(SH) vibration could be indicative of a reduction process operative on the CSSC cystine keratotic linkages and a possible origin of this is bacterial biodegradation identified histologically. This study demonstrates the molecular information available from non-destructive Raman spectroscopic analysis from single hair shafts or small bundles of fibres which complements information available from histological and destructive analytical techniques for rare biological specimens subjected to conservation or curation procedures in museums or private collections.en_US
dc.language.isoenen_US
dc.relation.isreferencedbyhttp://dx.doi.org/10.1039/B409224Ben_US
dc.subjectRaman spectroscopy; Human hair; Authenticity; Robert Stephenson; Isaac Newtonen_US
dc.titleRaman spectroscopic analyses of preserved historical specimens of human hair attributed to Robert Stephenson and Sir Isaac Newtonen_US
dc.status.refereedYesen_US
dc.date.Accepted2004-08-02
dc.date.application2004-08-23
dc.typeArticleen_US
dc.type.versionNo full-text in the repositoryen_US


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