TY - JOUR AU - Zilian, A. AB - Many industrial processes use in-process analytics to achieve reproducibly high product quality. During a batch distillation, for example, the quality of the product goes through an optimum and the main fraction can be collected when the concentration of all by-products drops below a critical value. The NIR spectra we obtain from such distillations show a systematic change with product quality. A quantitative model would require tens of samples for each by-product. We find that changes of concentrations of many by-products are highly correlated and there is only little variability in the data. This is not enough to extract the linearly independent contributions of each by-product. Therefore a qualitative analysis is made. TI - Qualitative Analysis for Automated Process Control JF - Journal of Near Infrared Spectroscopy DO - 10.1255/jnirs.180 DA - 1998-01-01 UR - https://www.deepdyve.com/lp/sage/qualitative-analysis-for-automated-process-control-FUITbnukvO SP - A131 EP - A132 VL - 6 IS - A DP - DeepDyve ER -