为了协调单粒子感应合等离子体质谱的原始数据处理
Isabel Abad-Alvaro1, Eduardo Bolea1, Francisco Laborda1
1Group of Analytical Spectroscopy and Sensors (GEAS), Institute of Environmental Sciences (IUCA), University of Zaragoza, Pedro Cerbuna 12, 50009, Zaragoza, Spain.
Talanta
|February 28, 2026
概括
这项研究验证了单粒子感应合等离子体质谱仪 (SP-ICP-MS) 的数据处理,通过协调四极仪器的临界值计算来确保可靠的粒子计数和强度测量.
科学领域:
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
背景情况:
- 对于SP-ICP-MS的高级数据处理工具缺乏验证,这阻碍了用户对结果的信任.
- 为了可靠的粒子分析,需要对数据处理标准进行协调.
研究的目的:
- 评估目前的SP-ICP-MS数据处理方法用于四极管.
- 促进基线和粒子歧视,事件计数和强度决定的临界值计算的协调.
主要方法:
- 对SP-ICP-MS.数据处理标准和表达式的深入评估.
- 基于基线强度的基线/粒子歧视的Poisson和Gaussian方法的评估.
- 使用开源工具SPCal与纳米和微粒子悬浮的验证.
主要成果:
- 基线强度对于选择适当的歧视方法至关重要 (Poisson与Gaussian).
- 覆盖率为5的覆盖因子将在各种条件中最大限度地减少假阳性 (<10).
- 覆盖率较低的因素会增加假阳性,特别是对于纳米粒子和短暂停留时间.
结论:
- 具有适当的临界值的SPCal提供可靠的粒子计数和强度数据.
- 提出的临界值计算方法验证了专有软件,突出了特定条件中的差异.
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