Analysis of Lignin Aromatic Structure in Wood Based on the IR Spectrum
Analysis of Lignin Aromatic Structure in Wood Based on the IR Spectrum
复制标题
DOI：
10.1080/02773813.2012.666316
复制
发表时间：
2012-01-01
影响因子：
2
通讯作者：
Matsumoto, Yuji
中科院分区：
文献类型：
--
作者：
Huang, Yu;Wang, Linshan;Matsumoto, Yuji
通过红外光谱分析了总共 17 种针叶木和 48 种硬木，以检验由硝基苯氧化产物计算出的紫丁香基比率（紫丁香基/（紫丁香基+愈创木基））是否可以通过红外光谱中木质素特征峰的面积比来精确表达。两个峰的面积比称为两个波数域的面积比，用“波数1/波数2”表示。检测的峰面积比为1595/1509、1509/1460、1275/1220、1130/1032和835/(855+815)。其中，log(1595/1509)和log(1275/1220)与紫丁香基比率呈显着线性关系，所有65种木材的相关系数均为0.98。这两个比率也可用于区分所有硬木和软木。
A total of 17 softwoods and 48 hardwoods were analyzed by IR spectroscopy to examine if syringyl ratio (syringyl/(syringyl+guaiacyl)) calculated from nitrobenzene oxidation products can be precisely expressed by area ratios of characteristic peaks of lignin in IR spectrum. Area ratio of two peaks is referred to as that of two wavenumber domains, represented by "wavenumber 1/ wavenumber 2." Examined peak area ratios were 1595/1509, 1509/1460, 1275/1220, 1130/1032, and 835/(855+815). Among these ratios, log(1595/1509) and log(1275/1220) showed significant linear relationship with the syringyl ratios with a correlation coefficient of 0.98 for all 65 woods. These two ratios could also be used to distinguish all the hardwoods from the softwoods.