在固体材料中直接分析生物分子,使用电子喷射电离化质谱学,再加上激光切除和液体采样技术
Takafumi Hirata1, Menghao Yang1, Hui Hsin Khoo1
1Geochemical Research Center, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
Mass spectrometry (Tokyo, Japan)
|May 30, 2023
概括
一种新的液体激光切除 (LAL) 技术与电喷离子质谱法 (ESI-MS) 结合,使有机化合物的快速现场分析成为可能. 这种方法可以有效地从固体材料中直接检测出水溶性和不溶性分子.
科学领域:
- 分析化学 分析化学
- 质谱测量质量谱测量
- 材料科学 材料科学 材料科学
背景情况:
- 分析固体材料中的有机化合物的传统方法往往需要复杂的样本准备,缺乏速度.
- 需要快速的现场分析技术,能够从固体矩阵直接分析各种有机化合物.
- 液体激光切除 (LAL) 与质谱学相结合,为直接样本分析提供了一个潜在的解决方案.
研究的目的:
- 报告一种新的液体激光除 (LAL) 采样技术与电喷射电离化质谱学 (ESI-MS) 结合.
- 评估LAL-ESI-MS系统的效率,速度和适用性,用于在现场分析有机化合物.
- 从固体材料直接分析水溶性和水不溶性有机化合物的能力.
主要方法:
- 开发了一种液体激光除 (LAL) 采样技术,使激光除能够在含有有机化合物的液体介质中进行.
- 整合了LAL采样与电子喷射电离质谱 (ESI-MS) 进行直接分析,无需染色分离.
- 采用快速激光扫描模式与光学光学用于快速切除 (约. 3秒为1毫米2面积) 并用氨酸,咖啡因和甲基甲酸盐 (BBP) 进行测试.
主要成果:
- 实现了快速采样 (大约. 3秒),并直接将废弃材料引入ESI-MS.
- 证明了水溶性 (氨酸,咖啡因) 和水不溶性 (BBP) 有机化合物的成功分析.
- 报告了分析品的整体离子产量和回收,分析重复率高于6%.
结论:
- 开发的LAL-ESI-MS技术为有机化合物的现场分析提供了一个快速和用户友好的平台.
- 这种方法克服了传统技术的局限性,因为它可以直接从固体样本中分析可溶和不可溶的分子.
- LAL-ESI-MS显示出各种应用的巨大潜力,需要对有机材料进行快速,直接的分析.
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