An on-line method of monitoring and controlling a chemical process is based on measuring the concentration of process reactants and products using spectrometric technology. The spectral data is analyzed using a modified chi-squared processing method to determine the unknown concentration of reactants...http://www.google.fr/patents/US5262961?utm_source=gb-gplus-shareBrevet US5262961 - Method for monitoring and controlling a chemical process
Method for monitoring and controlling a chemical process
