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Partial gas chromatograms of total lipid extracts from pottery from the locality of La Ventilla. (A) Crater: characteristic distribution of plant waxes (LV-058). (B) Amphora: abietic acid derivatives (LV-014). Drawings of representative (C) crater and (D) amphora vessels. A, n-alkane; F, fatty acid methyl ester; OH, n-alkanol; OH C32, biomarker of maize (21); IS, internal standard. Lipid extracts were run in different GC temperature programs to improve chromatographic peak resolution.
