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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
14/10/2011 |
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Data da última atualização: |
23/02/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
HANSEL, F. A.; BULL, I. D.; EVERSHED, R. P. |
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Afiliação: |
FABRICIO AUGUSTO HANSEL, CNPF; IAN D. BULL, University of Bristol; RICHARD P. EVERSHED, University of Bristol. |
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Título: |
Gas chromatographic mass spectrometric detection of dihydroxy fatty acids preserved in the 'bound' phase of organic residues of archaeological pottery vessels. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Rapid Communications in Mass Spectrometry, v. 25, p. 1893-1898, 2011. |
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Idioma: |
Português |
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Conteúdo: |
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. |
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Palavras-Chave: |
Arqueologia. |
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Thesagro: |
Cromatografia Gasosa. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/43308/1/2011-Fabricio-RCMS-GasChromatographic.pdf
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Marc: |
LEADER 01792naa a2200169 a 4500
001 1903084
005 2015-02-23
008 2011 bl uuuu u00u1 u #d
100 1 $aHANSEL, F. A.
245 $aGas chromatographic mass spectrometric detection of dihydroxy fatty acids preserved in the 'bound' phase of organic residues of archaeological pottery vessels.$h[electronic resource]
260 $c2011
520 $aA 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.
650 $aCromatografia Gasosa
653 $aArqueologia
700 1 $aBULL, I. D.
700 1 $aEVERSHED, R. P.
773 $tRapid Communications in Mass Spectrometry$gv. 25, p. 1893-1898, 2011.
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