不同产脂力马尾松的热脱附-气相色谱/质谱研究

摘要:采用热脱附气相色谱/质谱与计算机图像处理软件技术相结合，研究不同产脂力马尾松针叶色谱指纹图谱特征.结果表明:热脱附温度为350℃时，松针各挥发组分的分离较好，其色谱指纹图谱有较好的重复性；高产脂马尾松针叶与低产脂马尾松针叶的色谱指纹图谱有31个共有组分，其中有23个组分的T值是高产脂马尾松的高于低产脂马尾松的；高产脂马尾松有9个组分的T值高出低产脂马尾松的50％以上，都集中在 值为1.36～2.10的区间；经模糊聚类法分析，10株高产脂马尾松针叶色谱图相似系数0.90，10株低产脂马尾松色谱图相似系数0.91.

STUDY ON FINGERPRINTS OF DIFFERENT RESIN-PRODUCING CAPACITY OF Pinus massoniana Lamb BY THERMAL DESORPTION GC/MS

Abstract：The diagnostic fingerprints of the needles of P. massoniana Lamb with different resin-yield capacity were analyzed by thermal desorption GC/MS and computer image processing. Results show that with the temperature 350℃ of thermal desorption, volatile constituents in the needles are well separated and their fingerprints are well repeated. There are 31 common constituents in the fingerprint of high-yield resin P. massoniana Lamb and in that of low-yield resin P. massoniana Lamb. Of which T values of 23 common constituents are greater in high-yield resin P. massoniana Lamb than what in low-yield resin P. massoniana Lamb. T values of 9 common constituents are over 50% and they concentrate on the segment where value is between 1.36 to 2.15. By analysis with fuzzy clustering, both similarity coefficient of high-yield resin P. massoniana Lamb and that of low-yield resin P. massoniana Lamb are over 0.90.