微波辅助萃取法提取中药材中有机氯农药残留  

Determination of organochlorine pesticides in traditional Chinese medicine using microwave-assisted extraction

作　　者：李雪梅[1] 周围 

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

出　　处：《化工进展》2006年第11期1340-1344,共5页Chemical Industry and Engineering Progress

摘　　要：研究了采用微波辅助萃取技术从中药材中萃取有机氯农药的影响因素。有机氯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有机氯农药残留的最佳微波萃取参数设置为:萃取温度120℃;萃取时间8.00 min;萃取压力0.8 MPa。在此微波萃取条件下,萃取回收率在85%～117%,相对标准偏差介于3.4%～6.1%,方法最小检出限为0.001～0.005μg.g-1。A method to determine organochlorine pesticides in traditional Chinese medicine based on microwave-assisted extraction was studied. The organochlorine pesticides were determined with gas chromatography and electron capture detection. The result showed that the optimum setting of microwave-assisted extraction parameters were： microwave temperature 120℃; microwave time 8.00 rain： microwave pressure 0.8 MPa. The values of recovery were 85%～117%, the relative standard deviation （RSD） were 3.4%～6.1% and the limit of the detection for organochlorine pesticideswas 0.001μg·g^-1～0.005μg·g^-1.

关 键 词：微波辅助萃取法 有机氯农药 气相色谱法 中药材 

分 类 号：TQ453.21[化学工程—农药化工]