precipitation
来自维基词典,自由的词典
来自维基词典,自由的词典
從液體介質中產生可分離固相的過程;代表著一個新的凝結相的形成,如蒸氣或氣體凝結成液滴;在固體混合物中經由緩慢、內部的化學作用而漸漸的沉析出另一新固相;在分析化學中,沉澱通常用在從水溶液中分離出固相。
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