Online monitoring of glutamic solution concentration based on PLS regression

Online monitoring of glutamic solution concentration is very important to control the crystallization process. Using infrared spectrometer ReactIR 15, we can obtain the real-time spectral data. Based on the partial least squares regression method, we can establish the regression model between glutamic solution concentration and the real-time spectral data. Repeated calibration experiments based on this model show that the average error is 0.53, and the average relative error is 1.88%. The model has good prediction ability, and it realized online monitoring of glutamic solution concentration in crystallization process. This paper proposed a good reference frame for the online analysis of solution concentration in crystallization process.