采用感应合等离子光学发射光谱学的多波长内部标准化
Reagan Elia1, Thomas J Johnston1, Alberto D Figueroa1
1Department of Chemistry and Biochemistry, University of North Florida, Jacksonville, FL, 32224, USA.
Analytica chimica acta
|August 1, 2025
概括
多波长内部标准化 (MWIS) 提供了一种新的方法来追踪分析剂的确定,比现有的多信号方法提高准确性和吞吐量. 这种技术增强了复杂样品的校准策略,使用诱导合等离子体光辐射光谱法 (ICP-OES).
科学领域:
- 分析化学 分析化学
- 频谱学是一种光谱学.
- 痕迹分析 痕迹分析
背景情况:
- 目前的痕迹分析剂确定方法越来越多地使用"多信号"方法,依赖于校准曲线轴的仪器信号.
- 现有的多信号方法面临样本吞吐量,矩阵效应校正和每个分析物的多个可测量信号的要求的局限性.
- 引入多波长内部标准化 (MWIS) 作为一种新的策略,通过利用多个发射波长进行分析和内部标准来克服这些局限性.
研究的目的:
- 引入和验证多波长内部标准化 (MWIS) 作为一种先进的校准技术.
- 为了证明MWIS在传统和其他多信号校准方法上的优势.
- 展示MWIS在复杂矩阵和具有有限光谱信号的分析物的有效性.
主要方法:
- 使用感应合等离子体光学发射光谱法 (ICP-OES) 建立的概念验证.
- 在复杂的矩阵中进行的尖峰回收实验,以评估准确性和精度.
- 将MWIS性能与传统校准和其他多信号技术进行比较.
- 使用经过认证的参考材料进行验证,以进行全面的性能评估.
主要成果:
- 在复杂矩阵中,分析物的回收率接近100%,相对标准偏差约为1%.
- MWIS的性能优于传统的校准策略和其他多信号方法.
- 经过认证的参考材料分析显示,分析物的回收率在90%至118%之间.
结论:
- 与现有的多信号校准技术相比,MWIS提供了显著的改进,从最小的解决方案产生了众多校准点.
- 该方法通过监控多个内部标准信号,有效处理具有很少适合的排放波长的分析物,例如 (As) 和 (Pb).
- 频谱干扰很容易识别,可以排除在计算中,简化数据分析.
相关概念视频
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Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
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Inductively coupled plasma (ICP) is the most widely used plasma source in atomic emission spectroscopy (AES), also known as Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). The ICP source, or torch, consists of three concentric quartz tubes with argon gas flowing through them. A spark from a Tesla coil initiates the ionization of argon, generating a high-temperature plasma.
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01:29Atomic Emission Spectroscopy: Lab
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01:22Atomic Emission Spectroscopy: Instrumentation
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