The progress in recent years in characterizing the properties of the interface between air and water in the presence of commonly used surfactants in mineral flotation (termed frothers) is summarized. The focus of this review is on techniques that provide access to dynamic aspects of frother interactions at the interface between air and water, and those techniques that provide a unique perspective of equilibrium adsorbed layer properties. Profile analysis tensiometry (PAT) and other forms of interfacial tension measurement are described, and recent work highlighted. In addition, the methods of dilational interfacial rheology, which probes the viscoelastic properties of the air-water interface and the influence of dynamic adsorption processes, is discussed in relation to published work on flotation frother, as is work on measurement of rising bubble velocities, which allows probing of the dynamic adsorption layer (DAL). In addition to these more traditional measures of interfacial activity and effect, the study of the air-water interface with vibrational spectroscopy, and its relevance to flotation (with reference to recent published work), is described.

总结了近年来在矿物浮选中常用表面活性剂（称为起泡剂）存在下表征空气与水之间界面特性的研究进展。这篇综述的重点是在空气和水之间的界面上提供对起泡作用的动态方面的访问的技术，以及提供平衡吸附层特性的独特视角的那些技术。描述了轮廓分析张力法（PAT）和其他形式的界面张力测量，并重点介绍了最近的工作。此外，还针对已发表的有关浮选起泡剂的工作，讨论了膨胀界面流变学的方法，这些方法探讨了空气-水界面的粘弹性和动态吸附过程的影响，就像测量上升的气泡速度一样，可以探测动态吸附层（DAL）。除了这些更传统的界面活性和作用度量之外，还描述了空气-水界面与振动光谱的研究及其与浮选的关系（参考最近发表的著作）。