通过微波诱导等离子体质谱在单事件模式下进行离散实体分析
Ana Rua-Ibarz1, Flávio V Nakadi1, Eduardo Bolea-Fernandez1
1Department of Analytical Chemistry, Aragon Institute of Engineering Research (I3A), University of Zaragoza, Zaragoza 50009, Spain.
Analytical chemistry
|October 14, 2025
概括
单事件微波诱导等离子体质谱 (MINP-MS) 成功分析了纳米粒子,细胞和微塑料. 这种新的方法提供了超微量元素检测和精确的尺寸,与传统技术相竞争.
科学领域:
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
背景情况:
- 传统的感应合等离子体质谱 (ICP-MS) 面临着多原子干扰的挑战.
- 对纳米粒子和微塑料等离散实体的分析需要敏感和准确的量化方法.
- (N2) 血在某些元素分析中比 (Ar) 血具有潜在的优势.
研究的目的:
- 为了评估单次事件微波诱导等离子体质谱 (MINP-MS),用于分析离散实体.
- 评估N2等离子体在纳米粒子和细胞中超微量元素测定的能力.
- 确定MINP-MS适用于微塑料尺寸的适用性.
主要方法:
- 使用单次事件微波诱导等离子质谱法 (MINP-MS).
- 分析了氧化铁纳米粒子 (Fe2O3 NPs),纳米粒子 (SeNPs),Se丰富的酵母细胞和微塑料 (聚烯和PTFE).
- 通过传输电子显微镜 (TEM) 和动态光散射 (DLS) 进行尺寸测量,对结果进行比较.
主要成果:
- 实现了Fe的8.6ag的检测极限 (LoD),使得超微量元素的确定成为可能.
- 精确地描述了Fe2O3 NPs (20-70 nm) 和SeNPs (150-250 nm),与TEM和DLS有很好的一致性.
- 成功分析了微塑料和Se丰富的酵母细胞,证明了该方法的多功能性.
结论:
- 单事件MINP-MS是一种可行的技术,用于分析离散实体,包括纳米粒子,细胞和微塑料.
- 2等离子有效地减少干扰,使敏感的元素分析和精确的尺寸.
- 这种仪器为离散实体分析提供了ICP电离源的有希望的替代方案.
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