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利用改换溶剂法制备了灰黄霉素在４０％ 乙醇水溶液中的溶胶，明显提高了它在介质中的浓度。并用电泳电极液分析法测定了溶胶的电荷符号。
The sol of griseofulvin in 40% ethanol aqueous solution was prepared by changing the solvent method, which obviously enhanced its concentration in the medium. The charge sign of the sol was determined by electrophoretic electrodeposition.