The new method in the determination of negative ionsurface-active agent is introduced, comparing with methylene blue method, it have merits of simple operation step and little dosage.
介绍了水中阴离子表面活性剂测定新方法，该法与亚甲蓝法比较，具有操作步骤简单，萃取剂用量少的优点。
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The study situation of cane juice decolorization in a few years were reviewed, included surfaceactive agents, ion exchange, absorption decolorization, redox decolorization and so on.
The different extraction methods are compared in the determination of negative ionsurfaceactive agent. The steps are simplified and the efficiency is improved.