毛细管柱气相色谱法测定风油精中主要成分的含量

采用GC-900型气相色谱仪，毛细管程序升温法，将风油精中10多种成分进行了有效分离，测定风油精中樟脑、薄荷脑、水杨酸甲酯3种主要成分的含量，得出了较为理想的色谱图，用内标法测定樟脑的回收率为106.29%，RSD为2.56%；薄荷脑的回收率为102.44%，RSD为1.52%；水杨酸甲脂的回收率为98.38%，RSD为1.35%.

Determination of Main Compositions in the EssentialBalm by Capillary Gas Chromatography

The method of the capillary column with programmed temperature gas chromatography was used by the GC-900 gas chromatograph. Many kinds of compositions in the essential balm can be separated effectively by the method. The three main compositions that are camphor, menthol and methyl salicylate were quantified and satisfactory chromatogram was obtained. By the internal standard method, the recovery of determining the camphor, menthol, methyl salicylate are 106.29 %, 102.44 %, 98.38 % and RSD are 0.06 %, 2.62 % ,1.88 % respectively.