摘要
本文采用高效液相色谱法测定大蒜中吡虫啉的残留量。固相萃取小柱快速净化提取物,外标法定量。方法的检出限为0.03mg/kg,回收率在83.7%～93.8%,相对标准偏差为2.1%～4.3%。对3家菜市场(A、B、C)及3家超市(D、E、F)内的大蒜进行分析测定,结果菜市场A、B、C内大蒜的吡虫啉残留量分别为:0.1mg/kg,未检出,0.05mg/kg;超市D、E、F内大蒜的吡虫啉残留量分别为:0.1mg/kg,0.2mg/kg,未检出。
A combination method of SPE and HPLC were used to determine imidacloprid residues in garlic. The results showed that the detection limit of the method was 0.03mg/kg, the average recoveries were 83.7%-93.8%, the RSD were 2.1%-4.3%. The results of a survey from 3 markets （A, B, C） and 3 supermarkets （D, E, F） were 0.1mg/kg, undetected, 0.05mg/kg; 0.1mg/kg, 0.2mg/kg, undetected, respectively.
出处
《农药科学与管理》
CAS
2007年第9期19-21,共3页
Pesticide Science and Administration
关键词
大蒜
吡虫啉
固相萃取
液相色谱法
imidacloprid
residue
garlic
solid phase extraction
HPLC
