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相关概念视频

Blank Solutions00:56

Blank Solutions

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A blank solution is a solution that does not contain the analyte, or the substance of interest being tested or measured. It is typically prepared using the same reagents and procedure as the sample solution but without adding the analyte. The primary purpose of preparing a blank solution is to account for any background interference or contamination that may affect the accuracy and reliability of the analytical method.
In some experimental cases, the reagents, solvents, or lab equipment used in...
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The Electromagnetic Spectrum02:37

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The electromagnetic spectrum consists of all the types of electromagnetic radiation arranged according to their frequency and wavelength. Each of the various colors of visible light has specific frequencies and wavelengths associated with them, and you can see that visible light makes up only a small portion of the electromagnetic spectrum. Because the technologies developed to work in various parts of the electromagnetic spectrum are different, for reasons of convenience and historical...
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The Electromagnetic Spectrum01:24

The Electromagnetic Spectrum

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Electromagnetic waves are categorized according to their wavelengths and frequencies, giving the electromagnetic spectrum. These waves are classified as radio, infrared, ultraviolet, etc. Radio waves refer to electromagnetic radiation with wavelengths ranging from millimeters to kilometers. Radio waves are commonly used for audio communications (i.e., radios) and typically result from an alternating current in the wires of a broadcast antenna. They cover a broad wavelength range and are used...
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The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
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To achieve precise distance measurements, especially in surveying and construction, certain corrections must be applied to account for potential sources of error like the standardization errors, temperature variations, and slope adjustments.Standardization error emerges when measurement equipment undergoes changes, such as wear, repairs, or weather impacts. To address this, surveyors compare the equipment’s readings to a standard. This process identifies any deviation that might lead to...
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IR Spectrum01:19

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When infrared (IR) radiation passes through a molecule, the bonds stretch or bend by absorbing the radiation. This absorption creates the molecule's absorption spectrum, which is the plot of its percentage transmittance versus wavenumber.
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空光谱校正作为一种强大的解决方案,用于定量X射线光映射中的人工制品.

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    定量X射线光显微镜 (XFM) 的元素映射可以被数据处理方法扭曲. 减去测量的空白光谱,而不是计算的基线,可以获得更准确和更一致的元素含量分析.

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    科学领域:

    • 生物物理学的生物物理.
    • 材料科学 材料科学 材料科学
    • 分析化学 分析化学

    背景情况:

    • 射线光显微镜 (XFM) 是无标签元素映射的关键技术.
    • 在XFM中,准确的定量分析依赖于强大的光谱匹配和背景校正方法.
    • 现有的基线校正方法可以引入对获取参数的依赖性.

    研究的目的:

    • 调查基线校正方法对定量XFM元素映射的影响.
    • 识别影响XFM元素内容确定精度的处理变量.
    • 开发一种更可靠的方法,用于生物和材料样本的定量元素分析.

    主要方法:

    • 从小鼠植入前胚胎和卵巢毛囊中获得XFM数据.
    • 使用两个背景减法方法进行了定量光谱拟合:计算基线去除和经验空白光谱减法.
    • 对这两种方法来说,评估了获取停留时间和光谱聚合对定量结果的影响.

    主要成果:

    • 定量XFM元素映射结果显示,在使用计算的基线时,对获取停留时间和光谱聚合有显著的依赖.
    • 这些依赖导致了明显元素含量的变化,影响了样本比较.
    • 减去经验测量的空白光谱产生了独立于停留时间和光谱聚合的定量元素映射结果.

    结论:

    • 选择背景减法方法对XFM元素映射的定量准确性产生了重大影响.
    • 经验空白频谱减去为定量元素分析提供了更强大,更可靠的方法,克服了对获取参数的依赖.
    • 这种改进的方法提高了XFM数据在不同实验条件和样本类型的可比性和准确性.