SPECTRAL ANALYSIS OF AVERAGE INFRARED RADIATION OF FLOWING HETEROGENEOUS MATERIALS

摘要

A method of determining components of a flowing heterogeneous sample comprising obtaining a sample of material; measuring mid-infrared attenuation values of the sample and calculating in a data processing unit an indication of the component of interest in the sample from the measured mid-infrared attenuation values characterised in that the method further comprises flowing the sample; concurrently interacting mid-infrared radiation with the flowing sample in measurement region and subsequently measuring the mid-infrared attenuation values for one or more wavebands of the interacted radiation.