微塑料总量参数分析的新元素分析方法-ETV/ICP-MS与CO2
Vera M Scharek1, Tommy Kröger1, Karin Keil2
1Federal Institute for Materials Research and Testing (BAM), Division 1.1 - Inorganic Trace Analysis (ITALab), Richard-Willstätter-Straße 11, 12489, Berlin, Germany.
Analytical and bioanalytical chemistry
|October 19, 2025
概括
一种新方法使用电热蒸发与ICP-MS相结合,用于快速微塑料 (MP) 分析. 该工具在复杂的样本中检测到MP,为环境监测提供了显著的进步.
科学领域:
- 环境科学 环境科学
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
背景情况:
- 微塑料 (MP) 是全球重要的污染物,对环境分析构成挑战.
- 复杂矩阵中MP的当前分析方法通常很慢,缺乏SI可追溯性.
- 需要快速,全面和标准化的MP检测技术.
研究的目的:
- 为微塑料的总参数分析开发一个快速选工具.
- 为了使环境样本中MP的SI可追溯量化.
- 克服现有的MP检测方法的局限性.
主要方法:
- 使用电热蒸发 (ETV) 与感应合的等离子体质谱法 (ICP-MS) 相结合.
- 开发了一种基于13C+信号的MP大小独立的检测方法.
- 采用外部气体校准与动态CO2/稀释进行量化.
主要成果:
- 在纳米到微米范围内,无论聚合物类型如何,已经证明了对MPs的尺寸独立检测.
- 使用MP参考材料实现了13个C+MP信号的量化,其恢复率为80-96%.
- 成功地将该方法应用于土壤样本,通过用聚乙烯MP参考材料进行刺实验.
- 确定了0.13μg C的检测极限 (LOD) 和0.42μg C的量化极限 (LOQ).
结论:
- 开发的ETV-ICP-MS方法为微塑料总参数分析提供了快速和全面的分析方法.
- 这种技术提供了SI可追溯量化,解决了当前MP分析中的关键差距.
- 概念验证研究突出了在土壤等复杂的环境矩阵中常规应用的潜力.
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