Keywords Interfacilly Active Substances;Separation;Structural Identification;Emulsifiability by Aqueous Alkali;Petroleum Organic Acids;Oxygen Containing Substances;Liaohe Crude Oil;

• 界面活性组分;分离;碱水乳化性能;结构鉴定;石油有机酸;含氧化合物;辽河原油;