Deciphering the localisation of solid and dissolved impurities on the micron-scale in glacial ice remains a challenge, but is critical to understand the integrity of ice core records and internal deformation. Here we report on the state-of-the-art in microstructural impurity research by highlighting recent progress in bringing together cryo-Raman spectroscopy and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). We show the potential of both methods and discuss possibilities to improve inter-method approaches aiming for a more holistic understanding of the evolution of impurity localisation throughout the ice column, including post-depositional processes. In this framework, we elaborate on future research priorities such as LA-ICP-MS imaging on firn samples and integrating a large cryo-cell with imaging capabilities.

破译冰川冰中微米级固体和溶解杂质的定位仍然是一个挑战，但对于了解冰芯记录和内部变形的完整性至关重要。在这里，我们通过重点介绍冷冻拉曼光谱和激光烧蚀电感耦合等离子体质谱 (LA-ICP-MS) 相结合的最新进展，报告微观结构杂质研究的最新进展。我们展示了这两种方法的潜力，并讨论了改进方法间方法的可能性，旨在更全面地了解整个冰柱中杂质局部化的演变，包括沉积后过程。在此框架中，我们详细阐述了未来的研究重点，例如对冷冻样品进行 LA-ICP-MS 成像以及将大型冷冻室与成像功能集成。