Objective To establish a rapid qualitative method for detecting dichlorvos and omethoate in biomaterials.
Methods Dichlorvos and omethoate in gastric juice and blood samples were extracted by dichloromethane and evaporated using nitrogen stream. The residues were dissolved with dichloromethane and detected by gas chromatography-mass spectrometry (GC/MS). Indicators of sample pre-treatments and GC/MS conditions were described.
Results The detection of dichlorvos and omethoate in biomaterials could be finished in 60 min. A qualitative conclusion was drawn by comparing the total ion chromatograms and the mass spectrums of the samples with the standard mass spectra.
Conclusion The method can rapidly and accurately identify dichlorvos and omethoate in gastric juice and blood samples.
DownLoad: