Gc–ms Analysis of Lipids in Prehistoric Rock Paints and Associated Oxalate Coatings From the Lower Pecos Region, Texas

Bibliographic Data

ID8352014
AuthorsS SPADES (Arkansas State University), Jon Russ (0000-0003-3735-2459, Arkansas State University, corresponding author)
Year2005
Volume47
Issue1
Pages115-126
Publication date2005-02-01
Peer ReviewedYes
Open AccessYes
TypeARTICLE
VenueArchaeometry (JOURNAL)
Journal identifiersISSN: 0003-813X • E-ISSN: 1475-4754
PublisherWiley (PUBLISHER • GB)
DOI10.1111/j.1475-4754.2005.00191.x
OpenAlexW1975342414
LanguageEN
Citations received14
References cited22

The presumption that lipids were used as binders/vehicles in pictograph paints from southwestern Texas was tested using gas chromatography–mass spectrometry (GC–MS). A one‐step transesterification/derivatization procedure was used to convert bound and unbound fatty acids to fatty acid methyl esters for the analysis. Approximately 30 organic compounds were detected in the natural rock coating that encapsulates the paints, but there were no compounds unique to the paints. Moreover, the C 16:0 and C 18:0 concentrations in the paint samples were similar to the concentrations of these fatty acids in the rock coating, indicating that the compounds are native to the patina. Thus, lipid binders were either not used in the original paint mixture or have since degraded

Chromatography · Derivatization · Fatty acid · Gas chromatography · Gas chromatography–mass spectrometry · Mass spectrometry · Oxalate · Building materials and conservation · Chemistry · Cultural Heritage Materials Analysis · Maritime and Coastal Archaeology · Organic Chemistry

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