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固体气溶胶是指固体微粒以空气为介质的悬浮物,这种固体微粒在重力作用下的沉降速度小于几何直径相当于3.5μm和密度相当为1的球形粒子的沉降速度。由于粘土具有许多优点,因此,用粘土制备成的气溶胶常用于生物学和医学研究的吸入实验中,其中天然蒙脱石粘土是制备微球气溶胶的理想原材料之一。
Solid aerosol refers to the air-based suspension of solid particles. The settling velocity of such solid particles under the action of gravity is less than the sedimentation velocity of spherical particles whose geometric diameter is equivalent to 3.5 μm and density is 1. Due to the many advantages of clay, aerosols prepared from clay are commonly used in inhalation experiments in biology and medical research. Among them, natural montmorillonite clay is one of the ideal raw materials for the preparation of microsphere aerosols.