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相关概念视频

Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview01:19

Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview

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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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Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences01:20

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences

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Inductively coupled plasma–mass spectrometry (ICP–MS) is a highly selective and sensitive technique for accurate elemental analysis. Though the analysis of ICP–MS mass spectra is comparatively straightforward, it is affected by spectroscopic and non-spectroscopic interferences. Spectroscopic interferences arise when the plasma contains ionic species with an m/z value the same as the analyte ion. Spectroscopic interference can be categorized as isobaric, polyatomic ions, and...
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相关实验视频

Updated: Sep 9, 2025

Absolute Quantitation of Inositol Pyrophosphates by Capillary Electrophoresis Electrospray Ionization Mass Spectrometry
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使用HILIC-MS/MS方法研究内酸盐

Masatoshi Ito1,2, Natsuko Fujii3, Shinichi Koguchi4

  • 1Department of Neurology, Tokai University School of Medicine, Isehara, Kanagawa, Japan. masatoshi.ito@marianna-u.ac.jp.

Methods in molecular biology (Clifton, N.J.)
|August 29, 2025
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概括

研究人员开发了一种新方法来检测哺乳动物中的二二四酸盐 (InsP7) 和二二四酸盐 (InsP8). 这一突破为研究它们在健康和疾病中的作用提供了精确的量化方法.

关键词:
水性相互作用液体染色学伊诺西聚酸盐伊诺西酸盐没有.没有.没有.液体染色学-双重质谱学

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科学领域:

  • 生物化学
  • 分析化学
  • 细胞生物学

背景情况:

  • 伊诺西铁酸盐 (PP-InsPs),包括二酸五酸盐 (InsP7) 和二酸四酸盐 (InsP8),是重要的信号分子.
  • 在哺乳动物组织中直接检测PP-InsPs是具有挑战性的,因为它们的丰度和化学性质较低.

研究的目的:

  • 在哺乳动物样本中开发一种敏感和直接的分析方案来检测和量化PP-InsPs和伊诺西六酸盐 (InsP6).
  • 提供可靠的方法来研究PP-InsPs的生理和病理作用.

主要方法:

  • 用于敏感检测的液态染色体-双重质谱法 (HILIC-MS/MS).
  • 使用高纯度的合成标准进行绝对量化.
  • 详细的协议涵盖了样品的准备和柱子的再生.

主要成果:

  • 开发的HILIC-MS/MS协议可以对InsP7,InsP8和InsP6进行敏感和直接的检测.
  • 这些分析物的绝对定量可以在各种哺乳动物样本中实现,包括细胞,器官和尸检组织.
  • 该方法解决了与低分析量和特定化学性质相关的技术困难.

结论:

  • 在哺乳动物标本中建立了强大的PP-InsP量化分析方案.
  • 这种方法有助于研究哺乳动物生理学和病理学中的内酸盐功能.
  • 该协议为相关领域的研究人员提供了有效的工具.