Analysis of Vola tile Constituents in Pinus arm andii Bark with GC /MS

In this study, steam distillation was used to extract the volatile constituents from the bark of Pinus armandii. Thevolatile constituents and Pissodes punctatus were used for laboratory test by“Y”olfactometer. The chemical constituents ofthe volatile oil were identified with GC /MS method。6. 25% volatile constituents showed strong attractiveness to Pissodespunctatus in the laboratory, and 65 compounds were identified mainly including such chemical compound as Limonene(29. 27% ) ,Benzene (17. 81% ) , 1R-alpha. -Pinene ( 16. 08% ) , 3-Methylhexane ( 7. 15% ) , and Hep tane ( 5. 55% ) ,beta. -Pinene (5. 67% ) , Caryophyllene (3. 27% ) , beta.-Myrcene (3. 1% ) and etc.