中药材中拟除虫菊酯类农药残留的微波萃取/气相色谱检测  

Determination of Pyrethroid Residues in Traditional Chinese Medicines Using Microwave-assisted Extraction and GC

作　　者：周围 李雪梅[2] 

机构地区：[1]甘肃省出入境检验检疫局中心实验室,甘肃兰州730020 [2]西北师范大学地理与环境科学学院,甘肃兰州730070

出　　处：《分析测试学报》2007年第6期884-887,共4页Journal of Instrumental Analysis

摘　　要：研究了采用微波辅助萃取法从中药材中提取拟除虫菊酯类农药的影响因素。拟除虫菊酯类农药用毛细管气相色谱～电子捕获检测器检测。实验结果表明萃取中药材中拟除虫菊酯类农药残留的最佳微波萃取参数设置为：萃取温度80℃；萃取时间10min；萃取压力808kPa。在此微波萃取条件下，萃取回收率在80％～108％之间，相对标准偏差介于4．4％～5．8％，方法检出限（S／N=3）为0．04～0．16μg·g^-1.A method to determine pyrethroid residues in traditional Chinese medicines based on microwave -assisted extraction was studied. The pyrethroid residues were determined by gas chromatography with electron capture detection. The results showed that the optimal parameters of microwave-asslsted extraction： microwave temperature at 80 ℃, microwave time of 10. 00 min, and microwave pressure at 808 kPa. The recoveries were between 80% and 108% with RSD between 4.4% and 5.8% . And the limit of the detection for pyrethroid residues were between 0. 04 and 0. 16 μg ·g^-1.

关 键 词：微波辅助萃取法 拟除虫菊酯类农药 气相色谱法 中药材 

分 类 号：S482.35[农业科学—农药学] O658.2[农业科学—植物保护]