SEARCH Articles Figures Tables Absorbance spectroscopy Absorbance subtraction Fourier spectroscopy Fourier transform absorbance subtraction Fourier transform infrared Fourier transform spectroscopy Fourier transform spectroscopy infrared Infrared Spectroscopy absorbance Infrared absorbance Fourier transform Infrared absorbances Infrared absorbers Infrared spectroscopy, fourier Subtracter Subtracting Subtractive Subtractive Fourier-transform Transformed infrared spectroscopy