GC–MS ANALYSIS OF LIPIDS IN PREHISTORIC ROCK PAINTS AND ASSOCIATED OXALATE COATINGS FROM THE LOWER PECOS REGION, TEXAS*
GC–MS ANALYSIS OF LIPIDS IN PREHISTORIC ROCK PAINTS AND ASSOCIATED OXALATE COATINGS FROM THE LOWER PECOS REGION, TEXAS*
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德克萨斯州下佩科斯地区史前岩石涂料和相关草酸盐涂层中脂质的 GC-MS 分析*
DOI：
10.1111/j.1475-4754.2005.00191.x
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发表时间：
2005
期刊：
影响因子：
1.6
通讯作者：
J. Russ
中科院分区：
文献类型：
--
作者：
S. Spades;J. Russ
使用气相色谱-质谱法（GC-MS）的假设，脂质被用作粘合剂/车辆在象形画油漆从得克萨斯州西南部进行了测试。采用一步酯交换/衍生化方法将结合和未结合的脂肪酸转化为脂肪酸甲酯进行分析。在包裹油漆的天然岩石涂层中检测到大约30种有机化合物，但没有油漆特有的化合物。此外，油漆样品中的C1 6：0和C1 8：0浓度与岩石涂层中这些脂肪酸的浓度相似，表明化合物是铜绿天然的。因此，脂质粘合剂要么没有用于原始涂料混合物中，要么已经降解。
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 procedurewas 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 1 6 : 0 and C 1 8 : 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.