摘要
对中药材连翘中有机氯农药残留量测定的气相色谱方法进行了研究。样品中的农药用丙酮水进行提取 ,经二氯甲烷液液分配 ,浓硫酸磺化净化 ,用气相色谱OV - 170 1毛细管柱内标法进行检测。方法的最低检出浓度 :5 0× 10 -4 μg/mL～ 2 5× 10 -5μg/mL ;回收率 :81 5 5 %～ 10 5 2 5 % ;精密度 :0 0 16 %～ 3 32 %。并应用该方法对连翘、蒺藜和南沙参中有机氯农药残留量进行了测定。结果表明 :这 3种中药材中均有不同程度的有机氯农药残留 。
Residuals of organochlorine pesticides in Forsythia suspensa Vahl, Tribulus terrestris L. and Adenophora tetraphylla (Thunb.) Fisch were studied by gas chromatography. The pesticides were extracted by acetone, separated by sodium chlorine, distributed by CH 2Cl 2, purified by concentrated sulphuric acid and detected by GC-ECD. Internal standard method is adopted with HEPCLO as the internal standard. The minimum detection concentration was 5 0× 10 -4 *!μg/mL～ 25×10 -5 μg/mL The recovery is 81.55%～105.25%,the accuracy was 0.016%～ 3.32% . Organochlorine pesticides were detected in all of these 3 plant materials, but the amount did not exceed the standard of organochlorine pesticides residual MRL in gingsen set in GB/T 15517 1- 1995
出处
《吉林农业大学学报》
CAS
CSCD
北大核心
2001年第1期72-76,共5页
Journal of Jilin Agricultural University
基金
国家"九五"重点科技攻关资助项目! (96 90 3 0 2 )
关键词
气相色谱
有机氯农药
农药残留
连翘
蒺藜
南沙参
中药材
chromatograph
organochlorine pesticides
pesticides residual
Forsythia suspensa Vahl
Tribulus terrestris L
Adenophora tetraphylla (Thunb ) Fisch
