A quantitative description on dispersity of boehmite (γ‐AlOOH) particles, a key component for waste slurry at Hanford sites, can provide useful knowledge for understanding various physicochemical nature of the waste. In situ liquid scanning electron microscopy (SEM) was used to evaluate the dispersity of particles in aqueous conditions using a microfluidic sample holder, System for Analysis at Liquid Vacuum Interface (SALVI). Secondary electron (SE) images and image analyses were performed to determine particle centroid locations and the distance to the nearest neighbour particle centroid, providing reliable rescaled interparticle distances as a function of ionic strength in acidic and basic conditions. Our finding of the particle dispersity is consistent with physical insights from corresponding particle interactions under physicochemical conditions, demonstrating delicate changes in dispersity of boehmite particles based on novel in situ liquid SEM imaging and analysis.

中文翻译：

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原位液体 SEM 成像分析揭示了水溶液中的颗粒分散性

对勃姆石 (γ-AlOOH) 颗粒分散性的定量描述可以为了解废物的各种物理化学性质提供有用的知识。原位液体扫描电子显微镜 (SEM) 用于使用微流体样品架、液体真空界面分析系统 (SALVI) 评估颗粒在水性条件下的分散性。进行二次电子 (SE) 图像和图像分析以确定粒子质心位置和到最近邻粒子质心的距离，提供可靠的重新缩放的粒子间距离作为酸性和碱性条件下离子强度的函数。