苹果果皮、果肉、果核中农药残留量的试验分析

用正己烷∶丙酮=1∶1(V/V)作提取剂,采用石英毛细管柱,电子捕获检测器,气相色谱法测定苹果果皮、果肉、果核中甲氰菊酯、氯氰菊酯、氰戊菊酯、溴氰菊酯农药残留量。对苹果果肉试验结果表明,甲氰菊酯的回收率为80.9%～103.6%,RSD为1.30%～5.18%;氯氰菊酯的回收率为86.1%～103.9%,RSD为1.32%～5.01%;氰戊菊酯的回收率为81.3%～102.9%,RSD为2.09%～5.30%;溴氰菊酯的回收率为80.1%～103.8%,RSD为2.43%～6.39%。试验结果表明苹果果皮、果肉、果核中农药残留量相差较大。

Analysis on Pyrethroid Pesticide Residues in Peel,Pulp and Kernel of Apple

The pyrethroid residues,including fenpropathrin,cypermethrin,fenvalerate and deltamethrin in the peel,pulp electron capture detector.The results of apple pulps showed that the recoveries of fenpropathrin,cypermethrin,fenvalerate and deltamethrin ranged from 80.9%to 103.6%,86.1%to 103.9%,81.3%to 102.9%and 80.1%-103.8%respectively.Their RSD ranged from 1.30%to 5.18%,1.32%to 5.01%,2.09%to 5.30%and 2.43%to 6.39%respectively.The results indicated that there were significant differences in the contents of pyrethroid residues in the peel,pulp and kernel of apples.