有关分子级的表面产物、产物结构及其表面分布的直接信息对于矿物有效分离过程的制定是非常重要的。这些信息对不同特定用途 (如过滤、合成、防侵蚀等 )中的工业矿物表面性质的调节同样也是很重要的。了解被吸附的有机分子与矿物表面相互作用的机理和动力学是预测、控制和调节宏观表面性质最基本的要求。这样可以制定有效的分离或合成新材料的技术。本文研究的红外外反射光谱法具有一些独特的能力 ,用它可以研究不均匀基质上分子级的界面现象。这种方法获得的有关界面现象信息的多样性、精确性和可靠性均比其它方法要好。该方法分析速度快 ,且无破坏性。高的灵敏度 (从 2 0 %单层开始 )和就地收集多相体系信息 ,甚至在基质强吸收区域也能收集信息使得它成为很有价值的工具。记录到的反射光谱的复杂性 ,及它的灵敏度随所研究表面的光学性质和空间分布的变化 ,实际上强化了该方法。本文详细讨论了应用这种多诊断技术监测水溶液中硫化矿物表面调节的几个实例 Direct information on molecular-level surface products, product structures and their surface distributions is important for the development of effective mineral separation processes. This information is also important for the adjustment of the surface properties of industrial minerals in different specific applications (eg filtration, synthesis, erosion prevention, etc.). Understanding the mechanism and kinetics of the interaction of the adsorbed organic molecules with the mineral surface is the most basic requirement for predicting, controlling, and regulating macroscopic surface properties. This allows for the development of efficient techniques for separating or synthesizing new materials. The infrared reflectance spectroscopy studied in this paper has some unique abilities that can be used to study molecular-level interface phenomena on heterogeneous substrates. The information about interface phenomena obtained by this method is more diverse, accurate and reliable than other methods. The method is fast and non-destructive. The high sensitivity (from 20% monolayer) and the in-situ collection of multiphase system information, and the fact that information can be collected even in areas of strong substrate absorption make it a valuable tool. The complexity of the recorded reflection spectrum and its sensitivity to the changes in the optical properties and the spatial distribution of the studied surface actually reinforce the method. This article discusses in detail the application of this multi-diagnostic technique to monitor several examples of sulphide mineral surface conditioning in aqueous solutions