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      Potential use of NIR and visible spectroscopy to analyze chemical properties of thermally treated wood

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          Abstract

          Abstract: The modification of wood by thermal treatments produces characteristic changes in its chemical composition and surface color and can improve the structural and esthetic quality. The objective of this paper is to evaluate the potential of near infrared and visible spectroscopy to predict the modifications in chemical composition of Eucalyptys grandis and Pinus taeda after thermal treatment. Near infrared and visible spectra were collected directly on the longitudinal surface of wood samples. The thermally modified wood of both species showed higher content of lignin and extractives than the untreated wood. There was darkening of thermally modified wood, as a result of chemical modification caused by heat. The Near infrared/visible technique identified the groups that were modified by treatment. NIR and visible spectroscopy can be used to predict chemical composition of natural or thermally treated Eucalyptus grandis and Pinus taeda.

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          A review of band assignments in near infrared spectra of wood and wood components

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            Chemometrics tools used in analytical chemistry: an overview.

            This article presents various important tools of chemometrics utilized as data evaluation tools generated by various hyphenated analytical techniques including their application since its advent to today. The work has been divided into various sections, which include various multivariate regression methods and multivariate resolution methods. Finally the last section deals with the applicability of chemometric tools in analytical chemistry. The main objective of this article is to review the chemometric methods used in analytical chemistry (qualitative/quantitative), to determine the elution sequence, classify various data sets, assess peak purity and estimate the number of chemical components. These reviewed methods further can be used for treating n-way data obtained by hyphenation of LC with multi-channel detectors. We prefer to provide a detailed view of various important methods developed with their algorithm in favor of employing and understanding them by researchers not very familiar with chemometrics. Copyright © 2014 Elsevier B.V. All rights reserved.
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              On the geometry of SNV and MSC

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                maderas
                Maderas. Ciencia y tecnología
                Maderas, Cienc. tecnol.
                Universidad del Bío-Bío (Concepción, , Chile )
                0718-221X
                October 2018
                : 20
                : 4
                : 627-640
                Affiliations
                [1] Cuiabá orgnameFederal University of Mato Grosso orgdiv1Department of Forest Engineering Brazil
                [2] Curitiba Paraná orgnameUniversidade Federal do Paraná orgdiv1Department of Forest Engineering and Technology orgdiv2Laboratory of Wood Chemistry Brazil
                Article
                S0718-221X2018000400627
                3e86bef7-655f-4c3b-b5cc-f96d921b367c

                This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

                History
                : 10 May 2017
                : 07 May 2018
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 64, Pages: 14
                Product

                SciELO Chile


                Pinus taeda,Eucalyptus grandis,Chemical analysis,wood composition.,wood color,thermal modification

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