Near-Infrared Spectroscopy Application Note NIR –8 Analysis of lignin in wood pulp This Application Note describes how NIR spectroscopy can be used to determine the residual lignin content in wood pulp. Using the major absorbance peaks of both lignin and cellulose in the second derivative spectra, a two-wavelength equation can be developed to monitor the residual lignin content in wood pulp during paper production. Method description

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