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通过使用高分辨率并列质谱测量来识别在宁脱聚合过程中重的结构的指南

Cunhao Cui^1,2,3, Linyu Zhu¹, Zaifa Shi^2,3

¹School of Mechanical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P.R. China.

|October 10, 2024

概括

协奏质谱法 (MS/MS) 通过识别重结构和监测转化过程中的实时结构演变来推进素脱聚合分析. 这提供了对素分解机制的全面了解.

科学领域:

生物质转化和生物质价值化
分析化学分析化学
聚合物科学聚合物科学

背景情况:

高效的素转化对于减少对化石燃料的依赖至关重要.
理解素脱聚合机制受到高分子量产品识别方面的挑战的阻碍.
现有的方法缺乏在操作条件下同时进行分子量和结构分析的能力.

研究的目的:

建立基本指导方针,用于分析使用双重质谱法 (MS/MS) 的宁单位间联系.
为了识别主要的二聚和它们在素脱聚合过程中的联系.
使用现场MS/MS.实现实时监测在线素脱聚合过程中的结构演变.

主要方法:

在离线和现场模式下应用双重质谱法 (MS/MS).
为关键的单位间联系 (β-O-4,5-5,β-β,β-5,β-1) 建立MS/MS分离原则.
在现场进行MS/MS分析,实时监测结构变化.

主要成果:

为典型的单位间联系制定了基本的MS/MS分离准则.
成功识别了主要的二聚合物,包括它们的化学配方和链接类型.
实时监测揭示了具有相同化学配方的异构体的独特进化路径,突出了常见和明显的结构变化.

结论:

这项研究提出了一种先进的战略,用于对素脱聚合物的综合分析.
开发的MS/MS方法既可以进行静态组成分析,也可以进行动态结构演变监测.
这些发现有助于更深入地了解素分解机制,并促进有效的生物质转化.

关键词:

氨酸脱聚合法氨酸脱聚合法类二聚物是二聚物.结构识别结构识别协奏式质谱测量质谱测量协奏式质谱测量在现场进行反应监测.

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