The chemical component content of flue-cured tobacco with different grades, from different areas and of different varieties in Hubei were analyzed.

以湖北烟区烤烟样品为材料，分析了不同等级、产地和品种间烤烟化学成分的含量状况。

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METHODS The oils were extracted by steam distillation. The chemical compounds were separated and identified by GC-MS. The relative content of each component was determined by area normalization.

方法采用水蒸气蒸馏法获得挥发油，经GC - MS技术结合计算机检索对其化学成分进行分离和鉴定，用色谱峰面积归一化法计算各组峰的相对含量。

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When working, it splits light into its component colours, to reveal information about the chemical content, temperature and motion of planets, comets, stars, interstellar gas and galaxies.

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