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Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

609
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.
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Flame Photometry: Overview01:02

Flame Photometry: Overview

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Flame photometry, also known as flame emission spectrometry, is a technique used for the qualitative and quantitative analysis of elements present in a sample using a flame as the source of excitation energy. The concept of flame photometry was realized in the early 1860s by Kirchhoff and Bunsen, who discovered that specific elements emit characteristic radiation when excited in flames. The first instrument developed for this purpose was used to measure sodium (Na) in plant ash using a Bunsen...
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相关实验视频

Updated: Sep 15, 2025

Flame Experiments at the Advanced Light Source: New Insights into Soot Formation Processes
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基于LED阵列的多角度光散射用于吸入烟雾检测和分类.

Soocheol Kim1, Hoesung Yang2, Kwangsoo Cho2

  • 1Defense and Safety Convergence Research Division, Electronics and Telecommunications Research Institute (ETRI), Daejeon, 34129, Republic of Korea. skim88@etri.re.kr.

Scientific reports
|July 16, 2025
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种先进的烟雾探测器,使用多重散射来准确检测和分类火灾. 新的仪器是紧的,具有成本效益,并减少复杂环境中的错误报警.

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科学领域:

  • 消防安全工程 消防安全工程
  • 光学气溶科学学

背景情况:

  • 传统的烟雾探测器因单散射测量的局限性而扎于虚假报警.
  • 现实世界的环境往往涉及多重散射,挑战现有的基于 Mie 散射的系统.
  • 目前的系统面临着复杂对齐,高成本,大尺寸和性能差的问题.

研究的目的:

  • 开发一种先进的烟雾检测仪器,用于吸入烟雾的检测和分类.
  • 通过使用多重散射原理来克服单散射方法的局限性.
  • 创建一个具有成本效益,紧,高性能的烟雾检测解决方案.

主要方法:

  • 使用LED阵列采用多角度光散射测量.
  • 计算了用于防火和非防火气溶的独特光学属性比率.
  • 利用监督学习算法对10种类型的可燃和非可燃气溶进行分类.

主要成果:

  • 使用开发的仪器证明了烟雾检测和分类的可行性.
  • 为各种气溶类型实现了有效的分类性能.
  • 该仪器具有简单,经济高效和紧的设计.

结论:

  • 先进的烟雾检测仪器有效地减少了虚假的火灾报警.
  • 预计它将有助于根据火灾类别选择合适的灭火器.
  • 这项技术推动了复杂的火灾检测系统的研究.