Rehorn Christian, Blümich Bernhard
Institut für Technische und Makromolekulare Chemie, RWTH Aachen University, Aachen, Germany.
Angew Chem Int Ed Engl. 2018 Jun 18;57(25):7304-7312. doi: 10.1002/anie.201713009. Epub 2018 May 3.
Nuclear magnetic resonance (NMR) provides in situ information about selected isotope densities in samples and objects, while also providing contrast through rotational and translational molecular dynamics. These parameters are probed not only in NMR spectroscopy and imaging but also in nondestructive materials testing by mobile stray-field NMR, the unique properties of which are valuable in cultural heritage studies. We present recent progress in the analysis of cultural heritage with mobile H NMR stray-field sensors, for which the detection zone is outside of the NMR magnet. Prominent applications include the analysis of stratigraphies in paintings and frescoes, and the assessment of material states changing under the impact of aging, conservation, and restoration.
核磁共振（NMR）可提供有关样品和物体中选定同位素密度的原位信息，同时还可通过分子的旋转和平移动力学提供对比度。这些参数不仅可在NMR光谱学和成像中进行探测，还可通过移动杂散场NMR在无损材料测试中进行探测，其独特特性在文化遗产研究中具有重要价值。我们展示了利用移动氢核磁共振杂散场传感器分析文化遗产的最新进展，该传感器的检测区域位于NMR磁体外部。其突出应用包括分析绘画和壁画中的地层，以及评估在老化、保护和修复影响下发生变化的材料状态。
