精制包括用硅胶吸附柱吸附和用阴离子交换树脂进行处理。
The refining of vitamin E is realized via adsorption over silica gel column and treating by anionic ion exchange resins.
但吸附柱法实验周期太长，分批测定法仍具有不可取代的位置。
But the experiment cycle of column method is so long that batch method cannot be substituted yet.
不同的物质通过这个吸附柱的速度不同，最终将这些物质分成不同的段。
Different substances will pass with different speeds down the column and will eventually be separated into zones.
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