沉淀 Precipitation (chemistry)
（重定向自Supernate）
沉淀在化学上指从溶液中析出固体物质的过程；也指在沉淀过程中析出的固体物质。事实上沉淀多为难溶物（20°C时溶解度<0.01g）。在化学实验和生产中广泛应用沉淀方法进行物质的分离。
在水处理中指悬浮物在水中下沉，是悬浮物和水在密度上的差异形成的。
supernate
/'sju:pəneit/
英汉-汉英词典
n. 上清液
词组 | 习惯用语
您要查找的是不是：
- superannuate v. 因落后于时代而废除,勒令退学
- supernatural adj. 超自然的;鬼、神或幻术所引起的 n. 超自然的事物, 超自然现象
- supernal adj. 天上的；超自然的；神的；高的
- superintend vt. 管理,监督,主管
supernate n. [免疫] 上清液；浮在表面的液体层
网络短语:
supernate e 上浮液体层
soil supernate 土壤上清液
culture supernate 培养上清
ethanol supernate 醇沉上清液
cell culture supernate 细胞培养上清液
lymphocytes culture supernate 或淋巴细胞培养上清液
英语例句库
- Though there was no difference in detection rate with the three antigens, the cell culture supernate antigen was superior to other two antigens in titre and line sharpness.
三种抗原在检出率上虽无差异,但细胞上清液制备的抗原在效价、沉淀线的清晰度方面优于其它两种抗原。
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中文百科
英语百科
Precipitation (chemistry) 沉淀
（重定向自Supernate）
Precipitation is the creation of a solid from a solution. When the reaction occurs in a liquid solution, the solid formed is called the 'precipitate'. The chemical that causes the solid to form is called the 'precipitant'. Without sufficient force of gravity (settling) to bring the solid particles together, the precipitate remains in suspension. After sedimentation, especially when using a centrifuge to press it into a compact mass, the precipitate may be referred to as a 'pellet'. The precipitate-free liquid remaining above the solid is called the 'supernate' or 'supernatant'. Powders derived from precipitation have also historically been known as 'flowers'.