Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/903084
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dc.contributor.authorHANSEL, F. A.pt_BR
dc.contributor.authorBULL, I. D.pt_BR
dc.contributor.authorEVERSHED, R. P.pt_BR
dc.date.accessioned2011-10-14T11:11:11Zpt_BR
dc.date.accessioned2011-10-14T11:11:11Zpt_BR
dc.date.available2011-10-14T11:11:11Zpt_BR
dc.date.available2011-10-14T11:11:11Zpt_BR
dc.date.created2011-10-14pt_BR
dc.date.issued2011pt_BR
dc.identifier.citationRapid Communications in Mass Spectrometry, v. 25, p. 1893-1898, 2011.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/903084pt_BR
dc.descriptionA methodology is presented for the determination of dihydroxy fatty acids preserved in the ‘bound’ phase of organic residues preserved in archaeological potsherds. The method comprises saponification, esterification, silica gel column chromatographic fractionation, and analysis by gas chromatography/mass spectrometry. The electron ionisation mass spectra of the trimethylsilyl ether methyl ester derivatives are characterised by fragment ions arising from cleavage of the bond between the two vicinal trimethylsiloxy groups. Other significant fragment ions are [M–15]+., [M–31]+., m/z 147 and ions characteristic of vicinal disubstituted (trimethylsiloxy) TMSO? groups (?7,8, ?9,10,?11,12 and ?13,14: m/z 304, 332, 360 and 388, respectively). The dihydroxy fatty acids identified in archaeological extracts exhibited carbon numbers ranging from C16 to C22 and concentrations varying from 0.05 to 14.05 ?g g?1. The wide range of dihydroxy fatty acids observed indicates that this approach may be applied confidently in screening archaeological potsherds for the degradation products of monounsaturated fatty acids derived from commodities processed in archaeological pottery vessels.pt_BR
dc.language.isoporpt_BR
dc.rightsopenAccesspt_BR
dc.subjectArqueologiapt_BR
dc.titleGas chromatographic mass spectrometric detection of dihydroxy fatty acids preserved in the 'bound' phase of organic residues of archaeological pottery vessels.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2015-02-23T11:11:11Zpt_BR
dc.subject.thesagroCromatografia Gasosapt_BR
riaa.ainfo.id903084pt_BR
riaa.ainfo.lastupdate2015-02-23pt_BR
dc.contributor.institutionFABRICIO AUGUSTO HANSEL, CNPF; IAN D. BULL, University of Bristol; RICHARD P. EVERSHED, University of Bristol.pt_BR
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