菊酯类农药在粮食中残留量的分析

Analysis of Pyrethroid Pesticide Residue in Grains

采用乙睛作为提取荆，石英毛细管柱，电子捕获检测器检测，气相色谱法分析了粮食中4种菊酯类农药残留量，测定结果，表明，甲氰菊酯的回收率为82．5％-103．3％，脚为3．29％～5．33％；氯氰菊酯的回收率为84．4％-100．6％，RSD为1．34％-5．51％；氰戊菊酯的回收率为80．01％-102．5％，兄如为2．78％-6．67％；澳氰菊酯的回收率为80．3％-102．8％，RSD为3．07％-6．48％。分析结果准确可靠，方法快速、简便。

Acetonitrile was taken as the extractant, the quartz capillary vessel column was used, and we examined it with the electron capture detector, and 4 kinds of pyrethroid pesticide residue were analyzed by gas ehromatography. The monitoring resuh indicated that the recoveries of the fenpropathrin ranged from 82.5 % to 103.3 % with a RSD of 3.29 % to 5.33 % ; the recoveries of cypermethrin ranged from 84. 4 % to100.6 %, with a RSD of 1.34 % to 5.51% ; the recoveries of the fenvalerate ranged from 80.1% to 102.5 % with a RSD of 2. 78 % to 6.67 % ; the recoveries of the deltamethrin ranged from 80.3 % to 102.8 %, with a RSD of 3.07 % to 6.48 %. The result showed that the method was accurate and reliable,rapid and simple.