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在历史书籍中使用便携式X射线光技术量化的标准添加策略
Diego A Ahumada-Forigua1, Edgar Fernández1, Ana Rossell2
1Department of Chemical Engineering and Analytical Chemistry, Faculty of Chemistry, Universitat de Barcelona, Spain.
Analytica chimica acta
|January 16, 2026
概括
两种新的标准添加方法提高了便携式X射线光 (p-XRF) 精度,用于文化遗产中的元素分析. 浸支标准添加法 (Is-SAM) 提供了复杂样品中的可靠,非破坏性量化.
科学领域:
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
- 保护文化遗产 保护文化遗产
背景情况:
- 异质固体的定量X射线光 (XRF) 分析是具有挑战性的,因为矩阵效应和表面不规则.
- 当必须保持样本完整性时,像ICP-MS这样的破坏性技术不适合.
- 便携式XRF (p-XRF) 提供了现场分析,但往往缺乏定量准确性.
研究的目的:
- 开发和评估适应的标准加法策略,以提高p-XRF的准确性.
- 在不损害样本完整性的情况下,使文化遗产材料中可靠的元素定量成为可能.
主要方法:
- 开发了两种适应的标准添加策略:表面提取校准方法 (SECM) 和浸支标准添加方法 (Is-SAM).
- 在使用ICP-MS/OES作为参考技术的历史书籍材料中评估了的量化.
- Is-SAM使用外部校准基板进行非破坏性分析.
主要成果:
- Is-SAM方法在量化方面表现出很高的准确性,相对误差为-9%至+7%,不确定性为4-17%.
- 在基本参数 (FP) 上,SECM表现出改善,但在度升高时变化更高.
- 是-SAM符合报告的分析偏差标准,表现优于SECM和传统方法.
结论:
- 提出的基于SAM的策略显著提升了对依赖于矩阵的样本的非破坏性XRF量化.
- Is-SAM提供准确,可靠和完全非破坏性的元素分析,扩大了p-XRF应用.
- 这些方法可以在保护样本完整性至关重要的领域进行精确的元素量化.
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