Volume 9 Issue 3
1H Nuclear Magnetic Resonance of Lodgepole Pine Wood Chips Affected by the Mountain Pine Beetle
Tara M. Todoruk,Ian D. Hartley,Roshanak Teymoori,Jianzhen Liang andHartwig Peemoeller
1Physics Department, University of Northern British Columbia, 3333 University Way, Prince George, British Columbia, Canada
2Ecosystem Science and Management Program, University of Northern British Columbia, 3333 University Way, Prince George, British Columbia, Canada
3Department of Chemistry, University of Alberta, 11227 Saskatchewan Drive, Edmonton, Alberta, Canada
4Department of Physics and Astronomy, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, Canada
*Author to whom correspondence should be addressed.
Abstract
In this study, wood-water interactions of mountain pine beetle affected lodgepole pine were found to vary with time since death. Based on an analysis of magnetization components and spin-spin relaxation times from 11H NMR, it was determined that the mountain pine beetle attack does not affect the crystalline structure of the wood. Both the amorphous structure and the water components vary with time since death, which could be due to the fungi present after a mountain pine beetle attack, as well as the fact that wood from the grey-stage of attack cycles seasonally through adsorption and desorption in the stand.
Keywords:
free induction decay (FID); lodgepole pine; moisture content; mountain pine beetle; nuclear magnetic resonance (NMR); spin-spin relaxation time