| This approach is applicable to the testing of a group of residues like Mevinphos, Phorate, Diazinon, IBP, Parathion-methy1, Fenitrothion, Bromophos, Isocarbophos, Phenthoate and Methidathion in crops (rice, wheat, maize), fruit (apple, pear, peach, etc.), and vegetables (cucumber, Chinese cabbage, and tomatoes). According to this approach the testing methods include distilling acetone and water mixture, Dichloromethane extraction, purification by coagulation method and gas chromatography/nitrogen phosphorus detector (GC/NPD). The minimum testable concentration is 0.0002¡«0.0029mg/kg. |
