Gas chromatographic mass spectrometric detection of dihydroxy fatty acids preserved in the 'bound' phase of organic residues of archaeological pottery vessels.

HANSEL, F. A.; BULL, I. D.; EVERSHED, R. P.

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Campo DC	Valor	Lengua/Idioma
dc.contributor.author	HANSEL, F. A.	pt_BR
dc.contributor.author	BULL, I. D.	pt_BR
dc.contributor.author	EVERSHED, R. P.	pt_BR
dc.date.accessioned	2011-10-14T11:11:11Z	pt_BR
dc.date.accessioned	2011-10-14T11:11:11Z	pt_BR
dc.date.available	2011-10-14T11:11:11Z	pt_BR
dc.date.available	2011-10-14T11:11:11Z	pt_BR
dc.date.created	2011-10-14	pt_BR
dc.date.issued	2011	pt_BR
dc.identifier.citation	Rapid Communications in Mass Spectrometry, v. 25, p. 1893-1898, 2011.	pt_BR
dc.identifier.uri	http://www.alice.cnptia.embrapa.br/alice/handle/doc/903084	pt_BR
dc.description	A 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.iso	por	pt_BR
dc.rights	openAccess	pt_BR
dc.subject	Arqueologia	pt_BR
dc.title	Gas chromatographic mass spectrometric detection of dihydroxy fatty acids preserved in the 'bound' phase of organic residues of archaeological pottery vessels.	pt_BR
dc.type	Artigo de periódico	pt_BR
dc.date.updated	2015-02-23T11:11:11Z	pt_BR
dc.subject.thesagro	Cromatografia Gasosa	pt_BR
riaa.ainfo.id	903084	pt_BR
riaa.ainfo.lastupdate	2015-02-23	pt_BR
dc.contributor.institution	FABRICIO AUGUSTO HANSEL, CNPF; IAN D. BULL, University of Bristol; RICHARD P. EVERSHED, University of Bristol.	pt_BR
Aparece en las colecciones:	Artigo em periódico indexado (CNPF)

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