波谱学杂志Issue(4)：670-677,8.DOI:10.11938/cjmr20150412
利用核磁共振测定木材吸着水饱和含量
Bound Water Content in Saturated Wood Cell Wall Determined by Nuclear Magnetic Resonance Spectroscopy
摘要
Abstract
1H spin-spin relaxation time (T2) of water in 5 species of wood was measured by nuclear magnetic resonance (NMR) spectroscopy at room temperature and-3℃, which is thought to be related to the anatomical structure of the wood. The bound water content within swollen cell wall was determined by comparison of the inversion peak area before and after frozen treatment:Pinus sylvestris 38.3%,Cunninghamia lanceolata 38.5%, Populus sp. 36.0%,Fraxinus excelsior L. 35.6% andOchroma pyramidale 47.6%. The bound water contents determined by NMR spectroscopy were apparently higher than those obtained by the conventional extrapolation methods, but similar to the results obtained by the solute exclusion method, porous plate method, centrifugal dewatering method. It is concluded that NMR may provide a rapid and non-destructive way to determine bound water content in wood.关键词
核磁共振(NMR)/吸着水含量/自旋-自旋弛豫时间(T2)/木材/细胞壁饱和润胀Key words
nuclear magnetic resonance(NMR)/bound water content/spin-spin relaxation time/wood/cell wall分类
数理科学引用本文复制引用
高鑫,庄寿增..利用核磁共振测定木材吸着水饱和含量[J].波谱学杂志,2015,(4):670-677,8.基金项目
国家自然科学基金资助项目(30771677)，江苏省研究生培养创新工程资助项目(CXZZ13_0543)． （30771677）
