Biogenic amines during the fermentation of natto was detected by HPLC, using precolumn derivatization with DNS-Cl.
研究通过丹磺酰氯柱前衍生，用HPLC对纳豆发酵过程中的生物胺进行检测。
A method for the enantioseparation of 2, 5-hexanediol by capillary gas chromatography with precolumn derivatization was proposed.
建立柱前衍生化-毛细管气相色谱法分离2,5 -己二醇对映体的方法。
Objective: to establish precolumn derivation HPLC method to determine the monosaccharides in Heterosmilax japonica polysaccharide.
目的：建立柱前衍生HPLC法测定白土茯苓多糖中单糖的组成。
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