在历史矿区使用单颗粒ICP-MS确定空气中含有金属的纳米粒子
Tjaša Žerdoner1,2, Janja Vidmar1,2, Bor Arah3
1Jožef Stefan International Postgraduate School, Jamova 39, Ljubljana, Slovenia.
The Analyst
|May 27, 2025
概括
在PM10空气过器中的空气中的金属纳米粒子 (NPs) 在斯洛文尼亚的Meža Valley矿区被发现. 这些含和的NP,虽然很小,但具有很高的生物可访问性,造成暴露风险.
科学领域:
- 环境科学 环境科学
- 分析化学 分析化学
- 纳米技术纳米技术
背景情况:
- 关于斯洛文尼亚矿区Meža山谷空气中含有金属的纳米颗粒 (NP) 的数据有限.
- 含有金属的NP代表金属的生物可访问部分,对于评估人类暴露风险至关重要.
- 之前的研究并没有专门研究来自这个具有历史意义的采矿地区的PM10中的NP.
研究的目的:
- 评估来自Meža山谷上层的PM10空气过器中空气中含有金属的NP的存在和特征.
- 验证和应用单粒子感应合等离子体质谱法 (spICP-MS) 方法用于环境样本中的NP检测.
- 为了确定在PM10样本中作为NP存在的 (Zn) 和 (Pb) 的比例.
主要方法:
- 使用经认证的参考材料从PM10过器中提取含金属NP的提取程序的开发和验证.
- 优化提取协议的应用,包括在酸盐中进行超声波.
- 使用单颗粒感应合等离子体质谱学 (spICP-MS) 和扫描电子显微镜与能量分散式X射线光谱学 (SEM-EDS) 分析提取的NP.
主要成果:
- 这项研究成功地检测出Meža山谷的PM10空气过器中含和的NP.
- 在分析样本中,提取的NP占Zn总量的0.6-3.8%,占Pb总量的0.3-1.7%.
- SEM-EDS分析证实了含有Zn和Pb的纳米粒子存在,其组成各不相同.
结论:
- 这项研究提供了PM10中含有金属的NP的第一个证据,来自Meža山谷上部.
- 尽管NP的百分比很低,但这些NP的高生物可访问性使得它们在该地区对人类健康风险评估具有重要意义.
- 该spICP-MS方法有效地识别和量化来自采矿和炼环境的PM10中的含金属NP.
更多相关视频
14:53In Situ Detection and Single Cell Quantification of Metal Oxide Nanoparticles Using Nuclear Microprobe Analysis
Published on: February 3, 2018
7.6K
11:18A Practical Guide on Coupling a Scanning Mobility Sizer and Inductively Coupled Plasma Mass Spectrometer SMPS-ICPMS
Published on: July 11, 2017
11.2K
相关概念视频
01:19Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview
1.8K
In inductively coupled plasma–mass spectrometry (ICP–MS), an inductively coupled plasma (ICP) torch is used as an atomizer and ionizer. Solid samples are dissolved and volatilized before being introduced into the high-temperature argon plasma, while solution samples are nebulized and passed through the high-temperature argon plasma. Plasma dissociates the analytes and ionizes their component atoms to form a mixture of positive ions and molecular species. The positive ions are then...
1.8K
01:20Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences
1.3K
Inductively coupled plasma–mass spectrometry (ICP–MS) is a highly selective and sensitive technique for accurate elemental analysis. Though the analysis of ICP–MS mass spectra is comparatively straightforward, it is affected by spectroscopic and non-spectroscopic interferences. Spectroscopic interferences arise when the plasma contains ionic species with an m/z value the same as the analyte ion. Spectroscopic interference can be categorized as isobaric, polyatomic ions, and...
1.3K
01:19Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle
1.7K
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.
The ions and electrons produced interact with the fluctuating magnetic field created by a water-cooled...
The ions and electrons produced interact with the fluctuating magnetic field created by a water-cooled...
1.7K