加强荷兰当代人类和水同位素参考数据库:来自Sr-O-C-N-H同位素数据的新见解
Saskia T M Ammer1,2, Nathan Routhledge3, Gareth R Davies1,2
1Vrije Universiteit Amsterdam, Faculty of Science, Geology & Geochemistry Cluster, de Boelelaan 1085, 1081 HV Amsterdam, the Netherlands.
iScience
|April 22, 2024
概括
同位素分析通过确定地理来源来帮助法医调查. 虽然头发中的同位素 (δ15N) 在全球范围内是相似的,但头发中的碳同位素 (δ13C) 可以排除荷兰作为起源. 牙科和水同位素数据需要更多的参考数据来准确解释.
科学领域:
- 法医科学 法医科学 法医科学
- 同位素地球化学 同位素地球化学
- 人类起源的决定 人类起源的决定
背景情况:
- 同位素分析对于当初始识别方法失败时的法医调查至关重要.
- 准确解释人类同位素数据需要现代的饮食和地理来源的参考数据集.
- 本研究的重点是来自荷兰的 (Sr),氧 (O),碳 (C), (N) 和 (H) 同位素数据.
研究的目的:
- 为荷兰现代个人和饮用水提供Sr-O-C-N-H同位素数据.
- 评估这些同位素系统在法医背景下确定地理来源的实用性.
- 为了确定法医同位素分析当前参考数据的局限性.
主要方法:
- 对人类头发,牙面膜和牙原蛋白中的Sr,O,C,N和H同位素的分析.
- 来自荷兰的饮用水样本中的同位素分析.
- 将生成的同位素数据与现有的全球和区域数据集进行比较.
主要成果:
- 来自荷兰的人类头发的δ15N值是全球一致的,不适合差异化.
- 头发 δ13C 值显示欧洲和非欧洲地区之间存在明显差异,允许排除荷兰.
- 有限的参考数据阻碍了荷兰牙科同位素数据和自来水 δ2H 与其他国家的比较.
结论:
- 头发 δ13C 分析可以帮助在法医案件中排除荷兰作为地理来源.
- 进一步开发牙科和水同位素的全面参考数据库对于准确的法医来源确定至关重要.
- 同位素分析,特别是头发,提供了有价值的,虽然有时是有限的,关于一个人的地理起源的见解.
关键词:
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