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相关概念视频

Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview01:19

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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...
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Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences01:20

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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...
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Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle01:19

Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle

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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.
The ions and electrons produced interact with the fluctuating magnetic field created by a water-cooled...
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基于ICP-MS的纳米粒子表征的进展:生物样本分析的技术和挑战

Filip Gregar1, Daniel Baron1, Tomáš Pluháček1

  • 1Department of Analytical Chemistry, Faculty of Science, Palacký University Olomouc, Olomouc, Czech Republic.

Journal of separation science
|September 10, 2025
PubMed
概括

在生物系统中对工程纳米粒子 (NP) 的准确分析至关重要. 本综述强调了感应合等离子体质谱法 (ICP-MS) 方法的进展,包括单粒子ICP-MS和连线技术,用于检测和量化NP.

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:

  • 工程纳米粒子 (NP) 越来越多地用于消费者和生物医学产品.
  • 有关NP在生物系统中的积累,转化和毒性存在担忧.
  • 准确的分析方法对于在复杂的生物矩阵中检测,描述和量化NP至关重要.

研究的目的:

  • 批判性地评估最近 (从2020年1月起) 基于ICP-MS的方法在生物样本中进行NP分析的进展.
  • 为了比较单颗粒ICP-MS (spICP-MS) 和连字符的ICP-MS技术.
  • 讨论这些方法的优点,局限性和互补性,以了解NP命运.

主要方法:

  • 对基于ICP-MS的NP分析方法的最新文献的综述.
  • 单粒子ICP-MS (spICP-MS) 的详细检查,包括提取,粒子类型,矩阵和限制.
  • 讨论与ICP-MS.相结合的带连线的技术 (例如染色学,电泳).
  • 覆盖激光切除spICP-MS用于组织成像.

主要成果:

  • spICP-MS是最广泛用于直接确定NP大小,度和金属含量的方法.
  • 连接式技术为NP大小分布,聚合和相互作用提供了更深入的见解.
关键词:
生物样本 感应合等离子体质谱 (ICP-MS) 纳米粒子 单颗粒分离 单颗粒分离

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  • 激光切除spICP-MS可实现空间分辨的NP检测和组织成像.
  • 无论是spICP-MS还是连字符的方法都有特定的优势和局限性.

    • 结论:

    • 由于其灵敏度和定量能力,ICP-MS,特别是spICP-MS是生物样本中NP分析的领先技术.
    • 带连线的ICP-MS技术补充了spICP-MS,提供了关于NP行为和相互作用的额外信息.
    • 结合使用单粒子和连字符的ICP-MS方法,可以更全面地了解生物系统中的NP命运.