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挥发性有机化合物 (VOCs) 作为快速评估coprolites来源的一种手段

Wanyue Zhao¹, Helen L Whelton¹, John C Blong²

¹Organic Geochemistry Unit, School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK.

|May 31, 2023

概括

古代便中的挥发性有机化合物 (VOC) 可以识别它们的来源. 肉食动物,草食动物和人类共产物都会发出不同的VOC,为便生物标志物分析提供了一种快速的方法.

科学领域:

考古化学考古化学考古化学
分析化学分析化学
古生物学的古生物学

背景情况:

重水化矿的气味可以提供非正式的便识别.
分析来自不同矿来源的挥发性物质及其作为便生物标志物的潜力仍然未被探索.
挥发性有机化合物 (VOC) 是有机化学物质,很容易变成蒸汽或气体.

研究的目的:

分析来自不同来源 (食肉动物,食草动物,人类) 的矿所排放的VOCs.
探索VOCs作为便生物标志物的潜力.
为了评估不同类型的coprolite之间的VOC档案的差异.

主要方法:

固相微提取 (SPME) 用于分析来自佩斯利洞穴矿的VOCs.
气色谱-质谱法 (GC-MS) 用于化合物识别.
使用参考标准来验证歧视性化合物的身份.

主要成果:

来自食肉动物的矿石与食草动物和人类的矿石明显区分开来.
草食动物和人类的合物显示出一些分离,但不如肉食动物样本那么明显.
确定了8种特定的VOC,作为对矿原产地的歧视性标记.
挥发性有机化合物无法区分矿和它们相关的沉积物,表明出水.

结论:

挥发性有机化合物分析提供了一种快速和替代的方法来确定矿原产地.
清晰的VOC档案可以作为便生物标志物用于识别动物和人类遗骸.
挥发性有机化合物的浸出到周围的沉积物中限制了它们在区分共聚石和矩阵中的使用.

关键词:

考古学考古学在考古学方面.生物科学生物科学古生物学的古生物学.

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