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相关概念视频

Overview of Microscopy Techniques01:22

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The early pioneers of microscopy opened a window into the invisible world of microorganisms. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes that leveraged nonvisible light, such as fluorescence microscopy that uses an ultraviolet light source and electron microscopy that uses short-wavelength electron beams. These advances significantly improved magnification, image resolution, and contrast. By comparison, the...
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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...
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Mass spectrometry is an important technique for the identification of pure compounds. However, it has some limitations for the analysis of complex mixtures, often due to excessive fragmentation making the spectrum too complicated to decipher. Mass spectrometry can be combined with suitable separation methods in sequence, forming hyphenated methods, which are useful in the analysis of complex mixtures.
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Applications of the Single-probe: Mass Spectrometry Imaging and Single Cell Analysis under Ambient Conditions
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气动辅助微流体探测器用于增强质谱成像性能.

Li-Xue Jiang1, Julia Laskin1

  • 1James Tarpo Jr. and Margaret Tarpo Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States.

Journal of the American Society for Mass Spectrometry
|March 21, 2025
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概括
此摘要是机器生成的。

一种新的气动辅助微流体探针 (MFP) 能够实现生物组织的高通量纳米喷涂脱落电喷离离子质谱成像 (纳米-DESI MSI). 这项创新克服了真空限制,并确保稳定的溶剂流量,以实现强大的成像.

关键词:
高吞吐率的高吞吐量.质谱成像 (MSI) 的成像纳米喷雾脱电喷雾电离化 (纳米-DESI)气动辅助的微流体探测器

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科学领域:

  • 分析化学 分析化学
  • 生物技术是生物技术.
  • 质谱测量质量谱测量

背景情况:

  • 纳米喷雾脱电喷雾电离化质谱成像 (纳米-DESI MSI) 是分析生物样本的强大技术.
  • 对于纳米-DESI MSI,传统的微流体探针 (MFP) 面临着真空依赖系统的局限性,并保持稳定的溶剂流量,特别是小通道.
  • 高通量MSI实验需要一致的液体桥形成和可靠的探头操作.

研究的目的:

  • 为增强的纳米-DESI MSI开发一个气动辅助的微流体探头 (MFP).
  • 为了克服对质谱仪入口的真空吸收的依赖.
  • 为了实现稳定,高溶剂流速,用于高通量生物样本成像.

主要方法:

  • 开发一个双通道气动辅助微流体探头 (MFP).
  • 实施用于溶剂流量控制的气动辅助.
  • 用30微米通道测试MFP进行纳米-DESI MSI实验.
  • 五个小鼠大脑组织部分的成像,以证明强度.

主要成果:

  • 气动辅助的MFP简化了实验设置,并且独立于质谱仪的真空吸收.
  • 实现了稳定,高的溶剂流量,保持了一致的液体桥梁.
  • 探测器证明了高通量MSI的稳定性和可靠性,即使使用小的30微米通道.
  • 完成了五个小鼠大脑组织部分的成功,不间断的成像.

结论:

  • 气动辅助的MFP是纳米-DESI MSI的强大解决方案,特别是对于具有有限真空的仪器.
  • 这项技术使生物样品的高通量成像能够提高稳定性和可靠性.
  • 简化的实验设置和增强的溶剂流量控制扩大了纳米-DESI MSI的适用性.