扫描电子显微镜分析合金修复中的元素,以确定死者可能生活在何时. 一种基于斯堪的纳维亚国家的数据的方法
Sandra E Floberg1, Dalia Shwan1, Thuyen Michelle Tran1
1Faculty of Dentistry, University of Oslo, Oslo, Norway.
International journal of legal medicine
|July 4, 2025
概括
法医科学可以通过分析牙填充物来识别未知的人类遗骸. 用能量分散式X射线光谱 (SEM-EDS) 扫描电子显微镜根据元素组成区分铜合金和银合金.
科学领域:
- 法医人类学 法医人类学
- 材料科学 材料科学 材料科学
- 分析化学 分析化学
背景情况:
- 确定身份不明的人类遗骸的身份对于失踪人员调查至关重要.
- 牙合金成分在历史和地理上有所不同,特别是在斯堪的纳维亚国家.
- 不同的合金类型被引入并随着时间的推移逐步淘汰,提供了潜在的时间标记.
研究的目的:
- 调查扫描电子显微镜与能量分散式X射线光谱 (SEM-EDS) 的实用性,以区分牙合金类型.
- 根据化学成分,确定SEM-EDS是否可以区分铜合金和常规银合金.
主要方法:
- 六种历史上常见的牙合金被选择用于分析.
- 从每种类型的合金中准备了五个试验样本.
- 每个样本在五个不同的地点进行了SEM-EDS分析,每种合并品牌产生25个读数.
主要成果:
- 在SEM-EDS分析中,传统的银合金和铜合金之间存在明显的组成差异.
- 铜合金表现出非常低或无法检测到的银和锡含量.
- 传统的银合金显示出这些元素的特征存在.
结论:
- SEM-EDS是一个有价值的工具,用于分析牙科修复的元素组成.
- 这种技术可以帮助区分不同类型的牙合金.
- SEM-EDS可以协助法医人类学家识别未知的人类遗骸.
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