建立了顶空液相微萃取/气相色谱-质谱联用测定中药枳壳中有机挥发物的方法。在顶空液相微萃取实验条件优化的基础上,确定了最佳实验条件:以正辛烷作为有机萃取剂,体积为2μL,样品用量为0.3g,液滴距离样品表面0.8 cm处,萃取8 m in后直接...建立了顶空液相微萃取/气相色谱-质谱联用测定中药枳壳中有机挥发物的方法。在顶空液相微萃取实验条件优化的基础上,确定了最佳实验条件:以正辛烷作为有机萃取剂,体积为2μL,样品用量为0.3g,液滴距离样品表面0.8 cm处,萃取8 m in后直接进样。与固相微萃取/气相色谱-质谱法相比,顶空液相微萃取法定性了30种成分,固相微萃取法定性了24种成分,顶空液相微萃取法操作简单、快速,实验结果灵敏度更高,且萃取效率高,重复性好,可用于中药枳壳中有机挥发物的快速分析。展开更多
Volatile components from Platycladus orientalis are analyzed by gas chromatography with pyrolysis unit and mass spectrometry,and fifty two components were identified.The main chemical components are γ-Terpinen(4.45%)...Volatile components from Platycladus orientalis are analyzed by gas chromatography with pyrolysis unit and mass spectrometry,and fifty two components were identified.The main chemical components are γ-Terpinen(4.45%),1-methyl-4-(1-methyleth)-1,4-cyclohexadiene(1.53%),trans-caryophyllene(4.19%),humulene(3.8%),α-cedrol(36.99%),acoradiene(1.48%),dioctyl phthalate(1.35%).It is a rapid and practical method for analysis of the volatile components of Chinese herbal medicine.展开更多
文摘建立了顶空液相微萃取/气相色谱-质谱联用测定中药枳壳中有机挥发物的方法。在顶空液相微萃取实验条件优化的基础上,确定了最佳实验条件:以正辛烷作为有机萃取剂,体积为2μL,样品用量为0.3g,液滴距离样品表面0.8 cm处,萃取8 m in后直接进样。与固相微萃取/气相色谱-质谱法相比,顶空液相微萃取法定性了30种成分,固相微萃取法定性了24种成分,顶空液相微萃取法操作简单、快速,实验结果灵敏度更高,且萃取效率高,重复性好,可用于中药枳壳中有机挥发物的快速分析。
文摘Volatile components from Platycladus orientalis are analyzed by gas chromatography with pyrolysis unit and mass spectrometry,and fifty two components were identified.The main chemical components are γ-Terpinen(4.45%),1-methyl-4-(1-methyleth)-1,4-cyclohexadiene(1.53%),trans-caryophyllene(4.19%),humulene(3.8%),α-cedrol(36.99%),acoradiene(1.48%),dioctyl phthalate(1.35%).It is a rapid and practical method for analysis of the volatile components of Chinese herbal medicine.
