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相关概念视频

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation

261
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....
261
Atomic Emission Spectroscopy: Instrumentation01:22

Atomic Emission Spectroscopy: Instrumentation

539
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.
539

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相关实验视频

Updated: Jul 25, 2025

Scattering And Absorption of Light in Planetary Regoliths
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基于角散射效率因子谱的粒子大小分布测量反转模拟和实验.

Zhihui Wang, Tianyuan Liu, Tianlin Li

    Optics express
    |June 29, 2023
    PubMed
    概括

    一种新方法准确量化了复杂系统中的粒子大小分布 (PSD),使用角散射效率因子 (ASEF) 谱. 这克服了多分散粒子现有技术的局限性,使得科学领域的更好的表征成为可能.

    科学领域:

    • 物理 物理学 物理
    • 光学科学 光学科学
    • 材料科学 材料科学 材料科学

    背景情况:

    • 粒子大小分布 (PSD) 在各种领域至关重要,但在多散系统中准确测量它仍然具有挑战性.
    • 目前的光散射方法难以提供复杂混合物中每个粒子大小成分的相对含量信息.
    • 对于单分散系统的现有技术缺乏用于多分散粒子表征所需的精度.

    研究的目的:

    • 引入一种新的PSD反转方法,利用角散射效率因子 (ASEF) 频谱.
    • 解决目前用于量化聚散粒子系统相对组件信息的方法的局限性.
    • 提高复杂粒子系统中PSD测量的精度和效率.

    主要方法:

    • 开发了一种基于角散射效率因子 (ASEF) 频谱的PSD反转技术.
    • 建立了用于PSD测量的光能系数分布矩阵.
    • 采用反向算法与散射频谱测量相结合.
    • 使用分散光的多波长分布 (β(λ)) 而不是空间分布 (I(θ)).

    主要成果:

    • 模拟和实验验证了拟议的PSD反转方法.
    • 研究了噪声,散射角度,波长和尺寸离散对反转精度的影响.

    更多相关视频

    Measurement of Particle Size Distribution in Turbid Solutions by Dynamic Light Scattering Microscopy
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    Controlled Synthesis and Fluorescence Tracking of Highly Uniform PolyN-isopropylacrylamide Microgels
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    相关实验视频

    Last Updated: Jul 25, 2025

    Scattering And Absorption of Light in Planetary Regoliths
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    Measurement of Particle Size Distribution in Turbid Solutions by Dynamic Light Scattering Microscopy
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    Controlled Synthesis and Fluorescence Tracking of Highly Uniform PolyN-isopropylacrylamide Microgels
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  • 条件数分析确定了最佳参数 (散射角度,尺寸范围,离散) 以减少RMSE.
  • 波长灵敏度分析选择了最佳的光谱频段,以提高准确性和速度.

    • 结论:

    • 拟议的ASEF基于频谱的方法有效量化了多散系统中的PSD.
    • 该研究为优化测量参数提供了一个强大的框架,以提高PSD反转精度和效率.
    • 这种进步为需要精确粒子大小表征的应用提供了巨大的潜力.