V2EX supersaturated

Supersaturated

Definition / 定义

(尤指溶液或蒸气)过饱和的:在一定温度和压力下,所含溶质(或蒸气)量超过平衡溶解度(或饱和蒸气压)的状态,通常不稳定,容易因搅动、降温或加入晶种而析出/凝结。

Pronunciation / 发音

/suprstretd/

Examples / 例句

The solution became supersaturated as it cooled.
溶液在冷却时变成了过饱和状态。

In a supersaturated solution, a tiny seed crystal can trigger rapid crystallization of the excess solute.
在过饱和溶液中,一个很小的晶种就可能触发多余溶质的快速结晶。

Etymology / 词源

super-(“超出、在……之上”)+ saturated(“饱和的”)构成,字面意思就是“超过饱和”。在化学语境中用来描述“超过平衡饱和点但尚未析出”的亚稳态体系。

Related Words / 相关词

Literary Works / 文学作品

  • Physical Chemistry(Atkins 等)物理化学经典教材中常用于讲解过饱和、成核与相变。
  • Crystallization(J. W. Mullin)结晶工程领域经典专著,频繁讨论 supersaturated solutions 与晶体生长。
  • Transport Phenomena(Bird, Stewart & Lightfoot)在传递过程与相平衡相关章节中常见该术语的应用背景。
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