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A COMPARISON OF METHODS FOR ESTABLISHING FATTY ACID CONCENTRATION GRADIENTS ACROSS POTSHERDS: A CASE STUDY USING LATE BRONZE AGE CANAANITE AMPHORAE*
Authors:B. STERN  C. HERON  M. SERPICO  J. BOURRIAU
Abstract:Canaanite amphorae fragments in fabrics believed to be associated with the bulk transport of vegetable oils from the fourteenth‐century BC site of Amarna, Egypt, have been examined. A comparison is made between solvent extraction, saponification and the use of TMTFTH (m‐trifluoromethylphenyl)trimethylammomum hydroxide, used here for the combined extraction and derivatization of ceramic‐absorbed organic residues. Extracts were studied using gas chromatography and gas chromatography‐mass spectrometry. The extraction of fatty acids from small ceramic samples has established concentration gradients of absorbed organic matter from the inner to the outer surfaces of the sherds.
Keywords:EGYPT  TELL EL‐AMARNA LATE BRONZE AGE  EXTRACTION  GAS CHROMATOGRAPHY  GAS CHROMATOGRAPHY‐MASS SPECTROMETRY  METHYLATION SAPONIFICATION  AMPHORAE  CERAMICS  RESIDUES  FATTY ACIDS  TRADF
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