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黄腐酸在二甲基亚砜介质中不生成聚集体也不与凝胶产生吸附,因而它在Sephadex G-25和LH-20上能按分子大小分离。将两个分子量不同的但洗出曲线已测定过的黄腐酸级分,按一定比例混合后得到的实验洗出曲线与两者的加和洗出曲线基本重合。
Fulvic acid does not form aggregates in the dimethylsulfoxide medium and does not adsorb to the gel, so it separates on a molecular scale on Sephadex G-25 and LH-20. Two different molecular weight but the eluted curve has been measured fulvic acid fraction, according to a certain percentage of the experimental mixture obtained after washing curve and both the sum of the washing curve coincide basically.