X-Ray Diffraction as an Analytical Method in Wood Preservatives
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J. Zhang
Summary
X-ray diffraction (XRD) technique was used to analyze qualitatively and semi-quantitatively solid crystal deposits in wood treated with some preservatives. Chromated copper arsenate type-C (CCA), copper ethanolamine (Cu-EA), copper naphthenate (Cu-N), copper dimethyldithiocarbamate (CDDC) and boric acid treated southern pine was investigated. The solid deposit in post-treatment steamed Cu-N and Cu-EA treated wood samples was identified as cuprous oxide (Cu2O) by using XRD. The presence of CDDC crystals was observed in CDDC treated wood samples. The XRD pattern of boric acid treated wood shows that crystalline boric acid is present in the treated wood. After washing boric acid treated wood with distilled water, the crystalline signal of boric acid disappeared. An XRD technique was also developed to semi-quantify the amount of solid crystals in post-treatment steamed Cu-N treated and CDDC treated samples. It was estimated that about 50% of cupric copper was converted to cuprous oxide (Cu2O) in Cu-N treated wood after post treatment steaming whereas no cuprous oxide was found in non post-treatment steamed Cu-N treated samples. The CDDC content determined by XRD was consistently 10–20% lower than the value calculated from the copper content using atomic absorption spectroscopy (AAS) analysis.
Copyright © 2000 by Walter de Gruyter GmbH & Co. KG
Articles in the same Issue
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- Modifications of Hybrid Walnut (Juglans nigra 23 x Juglans regia) Wood Colour and Phenolic Composition Under Various Steaming Conditions
- Incorporation of 13C-Labeled Coniferyl Alcohol into Developing Ginkgo biloba L. Lignin Revealed by Analytical Pyrolysis and CuO Oxidation in Combination with Isotope Ratio Monitoring-Gas Chromatography-Mass Spectrometry
- Atomic Force Microscopy (AFM) Investigation of Langmuir-Blodgett (LB) Films of Sugar Cane Bagasse Lignin
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- Monitoring of Lignin and Hemicelluloses in Spent Cooking Liquor during Kraft Delignification
- Preparation of Wood with Thermoplastic Properties, Part 1. Classical Synthesis
- Preparation of Wood with Thermoplastic Properties, Part 2. Simplified Technologies
- The Effect of Hydrostatic Pressure on Physical Properties and Microstructure of Spruce and Cherry
- Application of Liquefied Wood to a New Resin System—Synthesis and Properties of Liquefied Wood/Epoxy Resins
- Lab-Scale Synthesis of Isotopically Labeled Formaldehyde for the Production of Formaldehyde-Based Wood Adhesives
- Confirmation of the Presence of Formaldehyde and N-(Methylene)morpholinium Cations as Reactive Species in the Cellulose/NMMO/Water System by Trapping Reactions
- Compressive Creep of Wood under High Temperature Steam
- Literature Reports
Articles in the same Issue
- Identification of Indoor Rot Fungi by Taxon-Specific Priming Polymerase Chain Reaction
- Characteristics of Spruce [Picea abies (L.) Karst] Latewood Formed under Abnormally Low Temperatures
- The Chemical Nature of Kiln Brown Stain in Radiata Pine
- Microdistribution of Some Copper and Zinc Containing Waterborne and Organic Solvent Wood Preservatives in Spruce Wood Cell Walls
- X-Ray Diffraction as an Analytical Method in Wood Preservatives
- Modifications of Hybrid Walnut (Juglans nigra 23 x Juglans regia) Wood Colour and Phenolic Composition Under Various Steaming Conditions
- Incorporation of 13C-Labeled Coniferyl Alcohol into Developing Ginkgo biloba L. Lignin Revealed by Analytical Pyrolysis and CuO Oxidation in Combination with Isotope Ratio Monitoring-Gas Chromatography-Mass Spectrometry
- Atomic Force Microscopy (AFM) Investigation of Langmuir-Blodgett (LB) Films of Sugar Cane Bagasse Lignin
- Comparison of Acetic Acid Lignin with Milled Wood and Alkaline Lignins from Wheat Straw
- Monitoring of Lignin and Hemicelluloses in Spent Cooking Liquor during Kraft Delignification
- Preparation of Wood with Thermoplastic Properties, Part 1. Classical Synthesis
- Preparation of Wood with Thermoplastic Properties, Part 2. Simplified Technologies
- The Effect of Hydrostatic Pressure on Physical Properties and Microstructure of Spruce and Cherry
- Application of Liquefied Wood to a New Resin System—Synthesis and Properties of Liquefied Wood/Epoxy Resins
- Lab-Scale Synthesis of Isotopically Labeled Formaldehyde for the Production of Formaldehyde-Based Wood Adhesives
- Confirmation of the Presence of Formaldehyde and N-(Methylene)morpholinium Cations as Reactive Species in the Cellulose/NMMO/Water System by Trapping Reactions
- Compressive Creep of Wood under High Temperature Steam
- Literature Reports
