ANALYSIS OF ORGANOPHOSPHORUS PESTICIDES B Y USING P-31-NMR

A rapid and highly selective method for the identification of 40 kinds of organophosphorus Pesticides was developed using P-31 Fourier Trans form Nuclear Magnetic Resonance with the H-1 complete decoupling metho d. Chemical shifts referenced by 85% H3PO4 were within -7 to 100 ppm, and there was no overlapping one among the organophosphorus pesticides tested. It is clear that the P-31 chemical shift is sensitive to the changes of the molecular structure. This method has been also proved t o have high capability in selecting P-31 atom contained in the materia l which includes water and other impurities.