RAPID PREDICTION OF WOOD CELLULOSE, PENTOSAN, AND KLASON LIGNIN CONTENTS USING NEAR INFRARED SPECTROSCOPY
The feasibility of Fourier transform near infrared spectroscopy (FT-NIR) to rapidly determine cellulose, pentosan, and Klason lignin content of wood was investigated. The cellulose, pentosan, and Klason lignin content of 106 samples were analyzed with traditional wet chemical technique, the FT-NIR spectra of which were collected from wood meal using integrating sphere. Partial Least Square (PLS) regression analyses were carried out to establish relationships between the data sets of wet laboratory chemical data and the FT-NIR spectra. The prediction models for the cellulose, pentosan, and Klason lignin content of wood samples were established using full cross validation in the wave length ranges of 7502-5446cm-1, 4601-4247cm-1 and 6102-4597cm-1 by the spectral data preprocessing methods of the 1.DerMSC and 1.DerVNorm. The high coefficients of determination (R2) between the predicted NIR values and those obtained from traditional wet chemical methods were 0.9705, 0.9927, and 0.9827, respectively. The low root mean square errors of cross validation (RMSECV) values were 0.40％, 0.38％, and 0.49％, respectively. Residual prediction deviation (RPD) values were 5.83, 11.7, and 7.61, respectively. The models derived from wood meal spectra were very precise. The predictions were very good, and standard errors of prediction varied from -0.36-0.38％, -0.40-0.40％, and -0.36-0.39％, respectively. Finally, one can find that NIR spectroscopy technique has many advantages, such as portability, good reliability and high accuracy, and is good for the content measurement of non-destructive wood cellulose, pentosan, and Klason lignin.
near infrared spectroscopy cellulose pentosan Klason lignin
He Wenming Hu Huiren Xue Chongyun Nie Yi
Tianjin Key Lab of Pulp and Paper, Tianjin University of Science & Technology, Tianjin, 300457,China Tianjin Key Lab of Pulp and Paper, Tianjin University of Science & Technology, Tianjin, 300457,China China National Pulp and Paper Research Institute
国际会议
广州
英文
157-160
2010-11-08（万方平台首次上网日期，不代表论文的发表时间）