泰州地区7种中药材中的有机氯农药残留量的测定

目的: 对泰州地区中药材甘草、黄芪、金银花、番泻叶、菊花、紫苏梗、西洋参中的有机氯农药的残留量进行研究。 方法: 样品以丙酮超声提取,选用ECD检测器在HP-5毛细管柱上用程序升温技术分离,用气相色谱对样品中9个有机氯农药残留进行测定。 结果: 9种有机氯农药在1~250 μg·L^-1范围内线性关系良好(r>0.996),检出限为0.04~0.22 μg·L^-1,添加回收率均在84.5%~107.8%。 结论: 该方法符合农药残留检测标准。

Objective: To study the residues of organic chloride pesticides in Glycyrrhizae Radix et Rhizoma, Astragali Radix,Lonicerae Japonicae Flos, Sennae Folium,Chrysanthemi Flos,Periliae Caulis,Panacis Quinquefolii Radix. Method: The sample was extracted with acetone.The pesticides were separated on a HP-5 column were detected with the ECD detector。The following temperature program was adopted: start oven temperature 80℃,held 1 min, followed by an increase to 175℃ at a rate of 30℃/min, held 4 min,then increased from 175 to 215℃ at a rate of 6℃/min, held 2 min,and lastly increased from 215 to 290℃at a rate of 15℃/min, held 2 min.Nine kinds of organic chlorine pesticides were determined by GC. Result: The results showed that all the nine organic chloride pesticides had a good linear relationship in the range of 1-250 μg·L^-1 (r >0.996); the detective limit was in the range of 0.04-0.22 μg·L^-1 and the recoveries were in the range of 84.5%-107.8%. Conclusion: The method is consistent with the standard of detective pesticide residue.

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