应该是定量的,因为文中说的是Decid-
uouswoodwhichmostly contain the acetoxy- andmethoxy-group
attached to xylose unit in hemicelluloseswas suggested to produce
more volatile than coniferouswood, especiallymoremethanol and
acetic acid.他是从二者含量的多少进行比较得出结论的。红外分析定量方法有吗?对这个定量分析不大熟悉,我们这边是用和溴化钾混合,然后测得。不过我不知道如何定量