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相关概念视频

Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview01:13

Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview

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Attenuated total reflectance (ATR) infrared spectroscopy is a powerful analytical technique used to study the composition of materials. It is widely employed in chemistry, materials science, forensic science, and other fields where sample characterization is required. ATR has several advantages over traditional transmission IR spectroscopy, including the requirement of little to no sample preparation and the ability to analyze a wide range of samples.
The ATR process begins by directing a beam...
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Raman Spectroscopy Instrumentation: Overview01:26

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A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
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Raman Spectroscopy: Overview01:20

Raman Spectroscopy: Overview

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The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
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相关实验视频

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Diffuse Reflectance Infrared Spectroscopic Identification of Dispersant/Particle Bonding Mechanisms in Functional Inks
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使用线性ATR-FTIR和拉曼光谱仪量化密集的多元件泥:汉福德的案例研究.

Rupanjali Prasad1, Steven H Crouse1, Ronald W Rousseau1

  • 1School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States.

Industrial & engineering chemistry research
|October 9, 2023
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概括
此摘要是机器生成的。

拉曼和减弱总反射率-里埃变换红外光谱 (ATR-FTIR) 提供了更安全,更快的核废物泥线上分析. 这些方法为有效的废物处理和处置提供了关键的组成数据.

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科学领域:

  • 分析化学 分析化学
  • 频谱学是一种光谱学.
  • 核废物管理 核废物管理

背景情况:

  • 核废物泥,如汉福德的泥,是复杂的多相混合物.
  • 目前基于实验室的分析速度很慢,对工人构成风险.
  • 为了高效的处理,需要实时的在线监控.

研究的目的:

  • 评估拉曼和ATR-FTIR光谱法用于分析核废物泥模拟剂.
  • 确定每个溶液和固态分析技术的有效性.
  • 建立直线光谱方法作为传统实验室分析的可行替代方案.

主要方法:

  • 在泥模拟剂上测试拉曼光谱.
  • 在泥模拟剂上测试减弱总反射率-里埃变换红外光谱 (ATR-FTIR).
  • 分析含有高达23.2重 %固体物质的泥.

主要成果:

  • 通过ATR-FTIR光谱仪准确地测量了溶液阶段 (3.52%的平均误差).
  • 拉曼光谱学提供了悬浮固体 (18.21%的平均误差) 的信息.
  • 核废物中多元件固体的直线测量以前没有报告.

结论:

  • 拉曼光谱和ATR-FTIR光谱都有效用于核废物泥的线性分析.
  • 这些光谱方法为组合分析提供了更安全,更快的替代方案.
  • 准确的成分数据对于稳定的玻璃配方和核废物处理至关重要.