Analytical Sciences

Abstract − Analytical Sciences, 26(5), 613 (2010).

Hyperplane Intercept Vector Calibration Method in Grey Analytical Systems
Huajie LIU, Kuiyi YOU, Pingle LIU, and He’an LUO
College of Chemical Engineering, Xiangtan University, Xiangtan 411105, P. R. China
A novel vector calibration method, hyperplane intercept, is proposed for grey analytical systems to resolve the concentrations of the chemical components from the multi-component data gained from attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy. This method is capable of quantifying a particular component known to be present in the mixture without having to know the identity of the rest of the components. Through the target factor analysis (TFA), a section of the IR spectrum of the interested component is chosen to calculate the concentration by the proposed hyperplane intercept method. Results calculated from on-line ATR-FTIR spectroscopy data of cyclohexanone ammoximation process are used to illustrate the simplicity and efficiency of this proposed method.