热分析方法及裂解气相色谱在树木分类上的试探性研究

热分析是在程序控制温度下自动连续跟踪物质的物理性质与温度关系的一类技术。尤其是差热分析和热重法与其他手段联合，可用于化合物稳定性、分解机理和相转变等方面的研究。由于种子是一个复杂化合物的有机体，我们期望发现各不同种子化合物之间在成份上和组成方式上的共性和差异性，从热化学的角度对木本植物进行热化学分类。我们选用针叶类两个科（松科、杉木科）的种子进行了ＤＴＡ、ＴＧ、５５０℃裂解气相色谱分析；３００℃逸出成份分析，发现松科种子ＤＴＡ图上在２４０±５℃有一个共同的吸热峰，而杉木则出现在３２０±５℃。ＴＧ曲线同科的不同种之间非常相似，逸出成份分析和裂解气相色谱分析同科的不同种之间也具共同特征，且又显示出一定的差异性。这种分类方法是可靠的，且可为树木（或植物）分类学提供更有价值的信息。

EXPLORATORY STUDY ON TREE CLASSIFICATION WITH THERMAL ANALYSIS METHODS AND THER MAL CRACKING GAS CHROMATOGRAPHY

Thermal analysis is a kind of technology in which the ralationship between physical natures of material and temperature is continuously measured in an automatical way under temperature controlling program. We choose the seeds of pinaceae and taxodeaceae as research material of tree classification. We found that they had the same characteristic peak and were different on thermal cracking gas chromatograph chart and DTA chart. Similarly,there were certain analogy and differences among the same genus of different species. Thermal analysis methods not only can be used in tree classification but also supply much messages for taxonomy.