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相关概念视频

Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle01:19

Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle

626
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...
626
Van de Graaff Generator01:15

Van de Graaff Generator

1.7K
Van de Graaff generators (or Van de Graaffs) are devices used to demonstrate high voltage due to static electricity that can also be used for research. Robert Van de Graaff first built one in 1931 (based on original suggestions by Lord Kelvin) for use in nuclear physics research.
Van de Graaff uses both smooth and pointed surfaces, conductors, and insulators to generate large static charges and, hence, large voltages. A substantial excess charge can be deposited on the sphere because it moves...
1.7K
Design Example: Automobile Ignition System01:14

Design Example: Automobile Ignition System

231
The automobile's ignition system plays a vital role by ensuring the timely ignition of the fuel-air mixture in each cylinder. This ignition is facilitated by a spark plug, which is composed of two electrodes separated by an air gap. A spark forms across this air gap when a substantial voltage is generated between the electrodes, leading to the ignition of the fuel.
One can generate a large voltage using a car battery of 12 volts with the help of inductors. Inductors are known for opposing...
231
Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

486
The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers.  Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
486
Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview01:19

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

747
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...
747
Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

167
AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
167

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相关实验视频

Updated: Jul 7, 2025

Preparing a Celadonite Electron Source and Estimating Its Brightness
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Preparing a Celadonite Electron Source and Estimating Its Brightness

Published on: November 5, 2019

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为非工程师设计一个电离源的原型.

Kevan T Knizner1, Seth M Eisenberg1, David C Muddiman1

  • 1FTMS Laboratory for Human Health Research, Department of Chemistry, North Carolina State University, Raleigh, NC, 27695, USA.

Journal of mass spectrometry : JMS
|December 21, 2023
PubMed
概括
此摘要是机器生成的。

本教程展示了如何使用现代工具对新型质谱仪器 (MS) 进行原型设计,表明不需要工程学位. 它涵盖了原型设计过程,技能和常见的硬件/软件,用于开发新的MS分析平台.

关键词:
计算机辅助设计是计算机辅助设计.硬件接口的硬件接口仪器仪表原型设计 仪器仪表原型设计微控制器上的微控制器软件开发软件开发软件开发

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相关实验视频

Last Updated: Jul 7, 2025

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Preparing a Celadonite Electron Source and Estimating Its Brightness

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科学领域:

  • 分析化学 分析化学
  • 生物技术仪器仪器仪表 生物技术仪器仪表

背景情况:

  • 新型质谱 (MS) 平台增强了生物和环境样本中的分子检测和量化.
  • 商用MS仪器的开发在很大程度上依赖于最初的原型创新.
  • 生物技术公司推动新MS仪器的研发,从可访问的原型工具中受益.

研究的目的:

  • 为科学家和工程师提供关于仪器原型设计的教程.
  • 证明工程学学位对于设计和制造原型MS仪器并不必不可少.
  • 突出用于仪器原型的现代硬件和软件的可访问性.

主要方法:

  • 案例研究:开发下一代IR-MALDESI的发展.
  • 讨论仪器原型制造过程中的基本步骤.
  • 在初始仪器原型中使用的常见硬件和软件的概述.

主要成果:

  • 现代硬件和软件显著简化了原型MS仪器仪表的过程.
  • 下一代IR-MALDESI源的开发是成功的原型设计的实际例子.
  • 确定了有效原型设计的关键技能和资源.

结论:

  • 使用当前的工具,为更广泛的科学受众实现了新型MS仪器的原型设计.
  • 可访问的原型设计为基于MS的分析平台提供了进一步的创新.
  • 这项工作降低了开发下一代MS仪器的进入壁垒.