XRF适用于常规分析多元素组成的适用性:多标准验证
Riccardo Fedeli1, Luigi Antonello Di Lella2, Stefano Loppi1,3
1BioAgry Lab, Department of Life Sciences, University of Siena, 53100 Siena, Italy.
Methods and protocols
|July 25, 2024
概括
射线光 (XRF) 分析是常规多元素土壤分析的可靠方法. 虽然XRF高估了植物样本,但校正方法确保了准确的结果,使其成为ICP-MS的可行替代品.
科学领域:
- 分析化学 分析化学
- 环境科学 环境科学
- 地质化学 地质化学
背景情况:
- 常规的多元元素组成分析对于环境和地质化学研究至关重要.
- 像ICP-MS这样的传统方法可能耗时且昂贵.
- 射线光 (XRF) 提供了一个潜在的更快,更容易获得的替代方案.
研究的目的:
- 评估便携式XRF适用于对土壤和植物认证参考材料的常规多元素分析的适用性.
- 通过将测量结果与认证值进行比较来评估XRF的分析性能.
- 确定XRF是否可以作为ICP-MS的可行替代品来进行元素分析.
主要方法:
- 在32种土壤和12种植物认证的参考材料上使用便携式XRF分析仪.
- 采用"土壤"和"地化学"模式,并使用顺序光束进行广泛的元素检测.
- 使用斯皮尔曼系数计算回收率和验证的相关性.
主要成果:
- 对于土壤样本来说,XRF表现出高可靠性,具有良好的回收和许多元素的强烈相关性.
- 植物样本分析显示过高估计,但统计学上显著的相关性使偏差纠正成为可能.
- "地质化学"模式对于更广泛的元素证明更可靠.
结论:
- 便携式XRF分析是常规多元素土壤成分分析的可靠方法.
- 一种校正方法可以在XRF分析的植物样本中准确量化元素.
- 在常规元素分析中,XRF为ICP-MS提供了一个合适且潜在的更有效的替代方案.
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