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相关概念视频

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

Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview

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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...
620
Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle01:19

Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle

502
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...
502
Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences01:20

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences

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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...
377
Mass Analyzers: Common Types01:19

Mass Analyzers: Common Types

554
The quadrupole mass analyzer consists of four cylindrical metal rods arranged in a diamond carrying a DC voltage and a radio-frequency AC voltage. The motion of ions through the quadrupole depends on the field strength, causing only ions of a certain m/z to resonate successfully and strike the detector at a given field strength. Though the transmission rate for these analyzers is high, the exact elemental composition of the sample is not determined because of low resolution; however, they are...
554
Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

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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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相关实验视频

Updated: Jun 2, 2025

A Microfluidic Chip for ICPMS Sample Introduction
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A Microfluidic Chip for ICPMS Sample Introduction

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粒子轨迹模拟促进了单粒子ICP-MS分析高效样本引入系统的开发.

Dingyi Wang1, Junhui Zhang1,2, Changjun Fan3

  • 1State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.

Analytical chemistry
|January 15, 2025
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种用于诱导合等离子体质谱 (ICP-MS) 单事件分析的新型样本引入系统. 它通过计算设计和3D打印实现了高粒子传输效率,提高了单细胞和粒子分析的准确性.

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A Practical Guide on Coupling a Scanning Mobility Sizer and Inductively Coupled Plasma Mass Spectrometer SMPS-ICPMS
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Preparation of Nanoparticles for ToF-SIMS and XPS Analysis
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Preparation of Nanoparticles for ToF-SIMS and XPS Analysis

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相关实验视频

Last Updated: Jun 2, 2025

A Microfluidic Chip for ICPMS Sample Introduction
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A Practical Guide on Coupling a Scanning Mobility Sizer and Inductively Coupled Plasma Mass Spectrometer SMPS-ICPMS
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科学领域:

  • 分析化学 分析化学
  • 质谱测量质量谱测量
  • 材料科学 材料科学 材料科学

背景情况:

  • 诱导合等离子体质谱 (ICP-MS) 对于单一事件分析 (例如单个细胞,粒子) 至关重要.
  • 提高样本引入系统的效率对于准确的单一事件ICP-MS分析至关重要.
  • 以前的研究通常依赖于经验方法,缺乏理论粒子表征和高效的制造优化.

研究的目的:

  • 开发一个高效率的样本引入系统,用于单次事件ICP-MS分析.
  • 整合计算模拟,3D打印和实验测试以优化系统.
  • 为设计和优化ICP-MS组件提供理论指导.

主要方法:

  • 在喷雾室内的粒子轨迹的计算模拟.
  • 使用各种材料精确3D打印喷雾室.
  • 内部制造和系统的快速实验测试.
  • 优化操作参数,如温度等.

主要成果:

  • 模拟的粒子轨迹提供了对运输效率的理论见解.
  • 在吸收边界条件下,在20-100nm之间的粒子在吸收边界条件下实现了>18.8%的运输效率.
  • 颗粒>100nm显示出0%的运输效率,由于沉积.
  • 优化的系统实现了61.1%的运输效率.

结论:

  • 模拟辅助设计,3D打印和测试的集成工作流显著增强了ICP-MS样品引入系统.
  • 这种方法为开发和验证临界质谱组件提供了具有成本效益和高效的方法.
  • 开发的系统显示了转变质谱学的未来研究和开发的潜力.