Fourier Transform Infrared is a versatile and rapid technique for identificationand determining lignin content. Typical bands are found at about 1500 and1600cm-1 and between 1470 and 1460cm-1 (Wegener et al. 1983). FTIR cangive information on the lignin type, methoxyl groups, carbonyl groups, andhydroxyl groups. FTIR spectra can be obtained directly on solid samples suchas wood, pulp, and paper by attenuated total reflectance (ATR), diffusereflectance (DRIFT), and photoacoustic (PAS) techniques (St
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