GC法测定栀子提取物中的正己烷等残留物

GC determination of residuum from macroporous adsorption resin in extractant from gardenia

目的建立测定栀子提取物中大孔吸附树脂残留正己烷、环己烷、正庚烷的方法。方法使用气相色谱法，采用DB-624毛细管柱。以氮气为载气，FID检测器，测定残留物含量。结果栀子提取物样品中未检出正己烷、环己烷、正庚烷；在所考察的浓度范围内线性关系良好，回收率在98．4％～103．1％，检测限0．24-0．58ng。结论该方法简便、灵敏度高，重复性好。结果准确，可用于栀子提取物的质量控制。

Aim To establish the method for determining n-Hexane,Cyclohexane and n-Heptane in extractant from gardenia. Method The GC system consisted of DB-624 capillary chromatographic column, nitrogen as the carrier gas,and FID as the detector. Results N- Hexane,Cyclohexane and n-Heptane were not found in extractant from gardenia. The mean recovery range from 97.6% to 103.4%. The limits of detection were 0.24 - 0. 58 ng. Conclusion The method is sensitive,accurate and reproducible, and it can be used to control the quality of extractant from gardenia.