顶空毛细管气相色谱法测定银杏叶片中大孔树脂残留物

目的：建立银杏叶片中9 种大孔树脂有机溶剂残留物的检测方法。方法：采用顶空气相色谱法测定大孔树脂残留物正己烷、苯、甲苯、邻二甲苯、间二甲苯、对二甲苯、苯乙烯、二乙基苯和二乙烯苯的含量。结果：9种大孔树脂残留物得到较好的分离，呈良好线性关系（r为0.999 2-0.999 8），精密度良好，平均回收率为80%-110%。结论：该方法准确快捷，灵敏度高，适用于银杏叶片中树脂残留物的检查。

Determination of Macroporous Resin Residues in Ginkgo Leaf Tablets by Headspace Capillary Gas Chromatography

This study was aimed to establish the determination method of nineorganic solvent residues of macroporous resin. Headspace capillary gas chromatography (GC) was used in the content determination of hexane, benzene, methyl-benzene, o-xylene, m-xylene, p -xylene, styrene, diethyl-benzene and divinyl-benzene of macroporousresin residues in Ginkgo leaf tablets. The results showed that ninemacroporous resin residues in Ginkgo leaf tablets were completely separated. The calibration curves were in good linearity (r=0.9992-0.9998). The average recoveries were 80%-110%. It was concluded that themethod was accurate, quick, and sensitive, which can be used to determine the macroporous resin residues in Ginkgo leaf tablets.