pesticide residues in mulberry leaf that can lead to silkworm poisoning, was analysed. The mulberry leaf was extracted with acetone, cleaned up by gel permeation chromatography and a small silica gel column, and final...pesticide residues in mulberry leaf that can lead to silkworm poisoning, was analysed. The mulberry leaf was extracted with acetone, cleaned up by gel permeation chromatography and a small silica gel column, and finally detected by gas chrornatography-mass spectrometry (GC/MS) and GC/ECD. There was 0. 432mg/kg eypermethrin in mulberry leaf(dry weight), and 2.14% cypermethrin in a formulation of dichlorvos 80EC used by the insect pest control of mulberry tree. The results gives a satisfactory explaination of the case silkworm poisoning, as cypermethrin is high toxic to silkworm and is banned pesticide in pest control by mulberry tree.展开更多
文摘pesticide residues in mulberry leaf that can lead to silkworm poisoning, was analysed. The mulberry leaf was extracted with acetone, cleaned up by gel permeation chromatography and a small silica gel column, and finally detected by gas chrornatography-mass spectrometry (GC/MS) and GC/ECD. There was 0. 432mg/kg eypermethrin in mulberry leaf(dry weight), and 2.14% cypermethrin in a formulation of dichlorvos 80EC used by the insect pest control of mulberry tree. The results gives a satisfactory explaination of the case silkworm poisoning, as cypermethrin is high toxic to silkworm and is banned pesticide in pest control by mulberry tree.
