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| Study on Near-infrared Calibration Model Transfer for Lignin Content in Pulpwood |
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| DOI：10.11981/j.issn.1000-6842.2019.03.43 |
| Key Words:near-infrared spectroscopy; model transfer; lignin; pulpwood |
| Fund Project:国家林业局948项目“农林剩余物制机械浆节能和减量技术引进”(2014-4 -31)。 |
| Author Name | Affiliation | | LIU Yaoyao | Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology， Nanjing Forestry University， Nanjing， Jiangsu Province， 210037 | | YANG Hao | Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology， Nanjing Forestry University， Nanjing， Jiangsu Province， 210037 | | XIONG Zhixin* | Jiangsu Provincial Key Lab of Pulp and Paper Science and Technology， Nanjing Forestry University， Nanjing， Jiangsu Province， 210037 | | LIANG Long | Institution of Chemical Industry of Forestry Products， CAF， Nanjing， Jiangsu Province， 210042 | | FANG Guigan | Institution of Chemical Industry of Forestry Products， CAF， Nanjing， Jiangsu Province， 210042 |
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| Abstract: |
| The near-infrared calibration model transfer for lignin content in pulpwood was investigated between two portable near-infrared spectrometers. An optimal calibration model of master was established by partial least square （PLS） after the selection of representative infrared spectroscopy data net samples， preprocessing and eliminating outlier samples. The near infrared spectroscopy calibration model was transferred between master and slave by the algorithms of slope/bias （S/B）， direct standardization （DS） and canonical correlation analysis （CCA）， respectively， and the prediction results were compared. The results indicated that the models transferred by DS and CCA improved the prediction accuracy significantly comparing to the algorithm of S/B with a poor performance. The coefficient of determination （R2）， root mean square error of prediction （RMSEP） and ratio of performance to standard deviate （RPD） by DS were 0.9643， 1.0370%， 5.3513， and by CCA were 0.9540， 1.1766%， 4.7711， respectively. Therefore， both DS and CCA algorithms could achieve the calibration model transfer between the two portable near-infrared spectrometers． |
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