Nontargeted Pattern Recognition in the Search for Pyrolysis Gas Chromatography/Mass Spectrometry Resin Markers in Historic Lacquered Objects
Nontargeted Pattern Recognition in the Search for Pyrolysis Gas Chromatography/Mass Spectrometry Resin Markers in Historic Lacquered Objects
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DOI：
10.1021/acs.analchem.9b00240
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发表时间：
2019-06-04
影响因子：
7.4
通讯作者：
Lynen, Frederic
中科院分区：
文献类型：
--
作者：
Decq, Louise;Abatih, Emmanuel;Lynen, Frederic
为基因表达数据的线性建模而开发的差异表达分析技术与热辅助水解和甲基化气相色谱/质谱（THM-GC/MS）相结合，以支持对历史物体上的清漆和清漆的分析。通过这种方法对马尼拉柯巴脂、桑达拉克树脂、南美柯巴脂和刚果柯巴脂等热带树木的分泌物进行了比较，这些热带树木在 20 世纪初经常用于装饰物品的饰面层。高度辨别性的特征表明生物标志物可以帮助识别树脂漆中的柯巴脂。该方法提供了新的、更系统的方法来在分析涂漆艺术品和清漆中寻找生物标志物。
A differential expression analysis technology developed for linear modeling of gene expression data was used in combination with thermally assisted hydrolysis and methylation gas chromatography/mass spectrometry (THM-GC/MS) to support the analysis of lacquers and varnishes on historical objects. Exudates from tropical trees, such as Manila copal, sandarac, South American copal, and Congo copal, which were frequently used in finishing layers on decorative objects up to the early 20th century, were compared through this approach. Highly discriminating features indicate biomarkers that can help to identify copals in resinous lacquers. The approach allows new, more systematic ways for finding biomarkers in the analysis of lacquered objects of art and varnishes.