污染物点检查和去除试验 (ContamSPOT) 用于质谱分析
Noah Smeriglio1, Haorong Li1, Wan Nur Atiqah Binti Mazli1
1Department of Chemistry, The George Washington University, Science and Engineering Hall 4000, 800 22nd St., NW, Washington, D.C. 20052, United States.
Analytical chemistry
|January 31, 2024
概括
污染物SPOT (ContamSPOT) 是一种新的测定方法,在分析之前检测质谱 (MS) 样本中的微量污染物. 这种方法提高了数据质量,并保护宝贵的MS仪器免受损坏.
科学领域:
- 分析化学 分析化学
- 生物化学 生物化学
- 蛋白质组学是指蛋白质组学.
背景情况:
- 质谱学 (MS) 分析经常受到诸如洗剂和盐等污染物的影响.
- 目前的方法在数据采集后才检测到污染,导致资源浪费和潜在的仪器损坏.
- 对于分析前检测污染物而言,非常需要一种敏感的测定方法.
研究的目的:
- 开发一种灵敏,快速和具有成本效益的测定方法 (ContamSPOT),用于检测和量化MS样品中的微量污染物.
- 优化污染物清除策略,以挽救受损样本.
- 评估ContamSPOT在评估自下而上的蛋白质组工作流程中的有效性.
主要方法:
- ContamSPOT使用在薄层染色学 (TLC) 板上进行色度或度测定,只需要1μL的样品.
- 开发了优化的污染物清除协议.
- 该试验用于评估清洗剂去除,回收,可复制性和蛋白质组覆盖的蛋白质组方法.
主要成果:
- 在最小的样本量中,ContamSPOT成功检测和量化微量污染物,包括洗剂和盐.
- 优化的去除方法在挽救样品时有效,损失最小.
- 该试验验证了各种自下而上的蛋白质组工作流程在去除污染物和样品质量方面的有效性.
结论:
- ContamSPOT作为MS样本准备的关键质量控制检查点,提高数据可靠性.
- 该试验通过提供样品清洁性的定量衡量,促进了新的MS样品制备方法的开发.
- 预计ContamSPOT将被广泛采用,改善MS数据质量和保护分析仪器.
相关概念视频
01:21Mass Spectrometry: Complex Analysis
782
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.
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
782
01:33Peptide Identification Using Tandem Mass Spectrometry
6.4K
Tandem mass spectrometry, also known as MS/MS or MS2, is an analytical technique that employs two mass analyzers. Essentially it is a series of mass spectrometers that helps isolate a particular biomolecule and then helps study its chemical properties.
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...
6.4K
01:16Mass Spectrometers
5.5K
This lesson details the instrumentation of a mass spectrometer—a physical instrument to perform mass spectrometry on analyte molecules and record the characteristic mass spectra. This is achieved via three chief functions:
5.5K
01:21Atomic Absorption Spectroscopy: Lab
409
For AAS measurements, samples must be introduced as clear solutions, often requiring extensive preliminary treatment to dissolve materials like soils, animal tissues, and minerals. Common methods for sample preparation include treatment with hot mineral acids, wet ashing, combustion in closed containers, high-temperature ashing, or fusion with reagents.
Solutions containing organic solvents, such as low-molecular-mass alcohols, esters, or ketones, enhance absorbances by increasing...
Solutions containing organic solvents, such as low-molecular-mass alcohols, esters, or ketones, enhance absorbances by increasing...
409