precipitating

We separated the subfractions of LDL by precipitating method and density gradient ultracentrifugation, and identified the subfraction by electronphoresis and electron microscope.

通过沉淀法分LDL,然后经过超速法分其亚组分。

Palladium can be separated from polyxene by the process of resolving polyxene,removing nitrate,precipitating palladium,etc.The grade of pure platinum obtained from the process is more than 99.95%.

粗铂经王水溶解,赶硝,加入丁二酮肟使大部分钯以沉淀形式与铂分,余留少量钯用溴酸钠水解法处理,可达到铂钯分目,所得纯铂品位高于99.95%。