热解吸/气相色谱/质谱法测定互叶白千层幼苗的挥发组分

建立了热解吸/气相色谱/质谱联用法直接测定互叶白千层植物幼苗挥发组分的方法.同时考察了解吸温度、升温速率、保留时间及其样品不同部位对结果的影响.最佳解吸升温程序为： 40 C (0 min) 15 C/min 150 C (3 min).植物的不同部位组分含量有差异，实验具有较好的重现性，4-松油烯醇百分含量的RSD值1.61.该方法具有无需样品预处理，样品用量少、快捷、准确、灵敏度高的特点，为互叶白千层品种的早期筛选提供了一个简便、科学的手段.

DETERMINATION OF THE ESSENTIAL OIL IN MELALEUCA ALTEMIFOLIA (TEA TREE ) PLUMULE BY THERMAL DESORPTION/GC/MS

A method for the direct detection of essential oil in tea tree plumule is proposed in the resent article. The method was based on an apparatus that combines ideally thermal desorption with GC/MS. The plant essential oil can be monitored directly without complex sample pretreatment. Parameters of the thermal desorption were optimized. The thermal desorption temperature program started with a 15oC/min ramp from 40 oC to 150 oC and then maintained 3 min. The total desorption time was 11min. The component content would be effected usually from different sampling position. The method has good reproducibility. RSD value of terpineol-4 was < 1.61. The proposed method is rapid, feasible and efficient for the identification of the quality of the tea tree plumule.