bi-ion active agent 两性离子表面活性剂
bi-ion n active agent 两性离子表面活性剂
negative ion surface-active agent 阴离子表面活性剂
negative ion surface active agent 阴离子表面活性剂
The new method in the determination of negative ion surface-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。
The different extraction methods are compared in the determination of negative ion surface active agent. The steps are simplified and the efficiency is improved.
通过对水中阴离子表面活性剂测定中不同萃取方法的比较，从而简化操作步骤，提高了工作效率。
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