目的:测定不同产地黔艾纳香中左旋龙脑的含量。方法:采用超声提取、毛细管气相色谱法测定,用HP-5石英毛细柱(30m×0.32mm×0.25μm......

目的：研究艾纳香有效成分与土壤因子的相关性,筛选影响其含量的主导因子。方法：GC测定艾纳香中l-龙脑的含量,紫外-可见分光光度计测......

[Objectives]To study the variation in main chemical composition of Blumea balsamifera in different growth stages,and to ......