一种强大的二维染色学方法,用于非目标分析脱聚合的宁
Eliise Tammekivi1, Magali Batteau1, Dorothée Laurenti2
1Universite Claude Bernard Lyon 1, ISA UMR 5280, CNRS, 5 rue de la Doua, 69100, Villeurbanne, France.
Analytica chimica acta
|January 14, 2024
概括
一种新的二维染色学方法通过分离复杂的混合物和异构体来增强素分析. 这一进步有助于为循环经济特征化,远离石化产品.
科学领域:
- 分析化学 分析化学
- 聚合物科学 聚合物科学
- 生物质的价值化 生物质的价值化
背景情况:
- 在循环经济中,素是纤维素生物质分离的副产品,是循环经济中价值化的关键目标.
- 精确的素结构特征对于开发高效的价值化过程至关重要.
- 素分析的挑战包括复杂的单体,寡体和有问题的同体混合物.
研究的目的:
- 开发一种先进的分析方法,用于非目标分析脱聚合的素.
- 改进素化合物,特别是异构体的分离和识别.
- 为了能够对不同的红素来源和加工方法进行比较分析.
主要方法:
- 一种离线全面的二维 (2D) 染色学方法,结合了液态染色学 (LC) 和超临界流体染色学 (SFC).
- 在二维中使用1 - 氨基烯列进行类分离 (单体到四体) 和基分离/固体效应.
- 在第一维中使用五甲基柱,以改善基于疏水性的分离.
- 集成的先进数据分析工具 (MS-DIAL,Sirius,基于特征的分子网络) 用于化合物可视化和异构体表征.
主要成果:
- 与1D SFC相比,实现了包括异构体在内的素化合物的优异分离.
- 证明了红素单体,二元体,三元体和四元体的类别分离.
- 通过综合数据分析成功可视化和研究检测到的化合物及其异构体.
- 确定77%的检测到的化合物在相同的素样本中至少有一个异构体.
结论:
- 开发了第一个2DLC图表来分类红素化合物,使得红素来源和加工进行比较.
- 该方法显著改善了复杂的素混合物和异构体的分离.
- 这种技术对于推进木质素价值化和循环经济至关重要.
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