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Holzforschung

International Journal of the Biology, Chemistry, Physics, and Technology of Wood

Editor-in-Chief: Faix, Oskar

Editorial Board Member: Daniel, Geoffrey / Militz, Holger / Rosenau, Thomas / Salmen, Lennart / Sixta, Herbert / Vuorinen, Tapani / Argyropoulos, Dimitris S. / Balakshin, Yu / Barnett, J. R. / Berry, Richard / Burgert, Ingo / Evans, Robert / Evtuguin, Dmitry V. / Frazier, Charles E. / Fukushima, Kazuhiko / Gellerstedt, Göran / Gindl-Altmutter, Wolfgang / Glasser, W. G. / Heitner, Cyril / Holmbom, Bjarne / Isogai, Akira / Kadla, John F. / Kleen, Marjatta / Koch, Gerald / Lachenal, Dominique / Mansfield, Shawn D. / Morrell, J.J. / Niemz, Peter / Pizzi, Antonio / Ragauskas, Arthur J. / Ralph, John / Rice, Robert W. / Salin, Jarl-Gunnar / Schmitt, Uwe / Schultz, Tor P. / Sipilä, Jussi / Tamminen, Tarja / Viikari, Liisa / Welling, Johannes / Willför, Stefan / Yoshihara, Hiroshi

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Effects of fixation temperature and environment on copper speciation in ACQ treated red pine

Cihat Tascioglu1 / Paul Cooper2 / Tony Ung3

1Faculty of Forestry, Duzce University, Duzce, Turkey

2Faculty of Forestry, University of Toronto, Toronto, Canada

3Faculty of Forestry, University of Toronto, Toronto, Canada

Corresponding author. Faculty of Forestry, Duzce University, Konuralp Campus, 81620, Duzce, Turkey

Citation Information: Holzforschung. Volume 62, Issue 3, Pages 289–293, ISSN (Online) 1437434X, ISSN (Print) 0018-3830, DOI: 10.1515/HF.2008.035, January 2008

Publication History

Received:
2007-07-31
Accepted:
2007-10-29
Published Online:
2008-01-18

Abstract

Red pine (Pinus resinosa Ait.) sapwood samples treated with alkaline (amine) copper quaternary (ACQ) were conditioned at different temperatures and under wet or dry conditions to evaluate the stability of copper (Cu) to leaching and conversion of divalent copper (Cu-II) to monovalent copper (Cu-I). Significant Cu-II was reduced to Cu-I during post-treatment stabilization, especially at elevated temperatures (105°C and 120°C). The percent conversion to Cu-I was higher at lower retentions; in some cases, at low retentions and high fixation temperatures, all of the cupric Cu was reduced to Cu-I, raising the possibility of reduced activity of Cu as a biocide when high temperature conditions are used to fix ACQ treated wood. However, exposure of wood to a leaching procedure (rewetting, re-drying) generally resulted in a significant component of the Cu-I in wood being oxidized back to Cu-II. Steaming of weathered ACQ treated wood at 120°C also converted significant amounts of Cu-II to Cu-I.

Keywords: alkaline (amine) copper quaternary (ACQ); 2,2′-biquinoline; copper speciation; Cu-I; fixation; ion coupled plasma spectroscopy; UV-visible

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[1]
Gao Zhou and Paul Cooper
Wood Science and Technology, 2015, Volume 49, Number 2, Page 303
[2]
Sedric Pankras, Paul A. Cooper, and Stephen Wylie
Holzforschung, 2012, Volume 66, Number 4
[3]
Lili Yu, Jinzhen Cao, Wei Gao, and Haitao Su
International Biodeterioration & Biodegradation, 2011, Volume 65, Number 4, Page 585
[6]
Myung Jae Lee and Paul Cooper
Holzforschung, 2010, Volume 64, Number 5

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