Prediction of lignin content and pulp yield

univariate method could therefore only use one frequency, Keywor-ds: Kraft pulping, Delignification, Principal Component 1118 cm-'. Moreover, a short cylindrical reflectance cell Analysis, Partial Least Squares, Black liquor, Cooking liquor, Lignin content, Near-Infrared Spectroscopy, Yield, Kinetics. equipped with a zinc selenide crystal was needed to fulfil1 special requirements like to diminish strong water absorption.