摘要
建立了使用快速溶剂萃取(ASE)技术提取,毛细管柱为分离柱,以电子捕获检测器检测,用气相色谱法同时测定果蔬中15种有机氯农药的残留量。与国标法——振荡萃取法(MSE)相比,在保证足够的准确度的前提下,具有前处理时间短、所用试剂少的特点。用该方法测试的结果表明,在5种果蔬中填加一定浓度的待测物时,各种待测物的回收率均在85.7%￣108.5%之间;相对标准偏差(RSD)为1.9%￣9.5%(6次测定平均值);最低检出限为1.1～20μg/kg.之间,结果表明,使用ASE萃取果蔬中有机氯农药符合国标规定的农药残留检测的需要。
An analytical procedure using accelerated solvent extraction （ASE） and capillary gas chromatography with electron capture detecton was developed to determine 15 organochlorine pesticides in fruits and vegetables simultaneously. The average recoveries were 85.7%-108.5% with RSD 1.9%-9.5%. The lowest detection limit was 1.1 -20μg/kg. The results showed that the ASE could be used as a method to extract residues of organochlorine pesticides in fruits and vegetables.
出处
《农药科学与管理》
CAS
2005年第10期10-13,共4页
Pesticide Science and Administration
