氟磷谱定量核磁共振法进展综述

    A Review on the Advancements in Quantitative Nuclear Magnetic Resonance Spectroscopy of Fluorine and Phosphorus

    • 摘要: 定量核磁共振法(qNMR)作为一种选择性强、准确快捷的定量分析方法,广泛应用于有机化合物的纯度定值。它作为潜在基准方法,在国际计量比对中得到越来越广泛的关注与应用,而且最新的国际计量发展规划计划将其从传统的氢谱(1H)扩展至氟谱、磷谱的技术领域。随着qNMR在代谢组学、环境分析和生理学研究等新的领域的应用,引入了天然产物、生物分子、蛋白质和代谢物等更复杂的分子和系统,使得常用的1H-qNMR遇到很大挑战,因此基于氟(19F)和磷(31P)等具有核磁共振特性核的qNMR日益受到重视。与1H-qNMR相比,氟谱和磷谱具有相近的灵敏度、更高的分辨能力,可以排除残留溶剂或水峰的干扰。介绍了19F-qNMR和31P-qNMR的特性优势、方法上的改进性和近年来在各领域的研究进展。在19F-qNMR和31P-qNMR方法学研究中,重点在具有溯源性的标准物质的研制、同轴插入内标方法、参数优化等方面。在应用领域,19F-qNMR重点集中于医药、材料、环境等领域,31P-qNMR集中于食品、医药、生物等领域。

       

      Abstract: Quantitative Nuclear Magnetic Resonance (qNMR) stands as a selective, accurate, and prompt method for quantitative analysis, predominantly employed in purity assessments of organic compounds. Its potential as a primary method has generated burgeoning interest and applications in international metrological comparisons. The recent international metrological development strategy plans to extend its conventional scope from hydrogen spectroscopy (1H) to fluorine and phosphorus spectroscopy. The incorporation of qNMR in new domains such as metabolomics, environmental analysis, and physiological research has introduced more intricate molecules and systems, like natural products, biomolecules, proteins, and metabolites, thereby challenging the standard 1H-qNMR. This has led to an increased focus on qNMR methodologies based on other NMR-active nuclei such as fluorine (19F) and phosphorus (31P). These methodologies offer comparable sensitivity, enhanced resolution, and the ability to eliminate interference from residual solvents or water peaks relative to 1H-qNMR. This review presents the distinctive advantages, methodological enhancements, and the latest research developments in 19F-qNMR and 31P-qNMR. Particular emphasis is placed on the development of traceable reference materials, coaxial internal standard insertion methods, and parameter optimization. The application domains of 19F-qNMR encompass medicine, materials, and environmental sciences, whereas 31P-qNMR is centered around food, medicine, and biological sectors.ound food, medicine, and biological sectors.

       

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