DEVELOPMENT OF CALIBRATION STANDARDS FOR FOURIER-TRANSFORM INFRARED SPECTROMETER IN CONTINOUS MONITORING OF INCINERATOR EMISSIONS

Recent development of Fourier transform infrared spectroscopy greatly expands its potential as a continuous monitoring system for incinerato r emissions. However, one of the key factors in ensuring success of th is technology is obtaining a set of reliable calibration standards for the quantitation of target analytes. Experimental results in this stu dy indicate that calibration should be conducted at the same cell cond ition as that used in the field monitoring. A static method is adequat e in the calibrations of non-reactive compounds, but for a reactive co mpound, such as hydrogen chloride, a dynamic method must be used. The study also shows that single-component reference spectra collected in the calibration, combined with a partial least-squares method, are abl e to predict mixtures with strong spectral overlaps.