Study On Effect Of Potassium Ferrate On Degradating Residuary Pesticide And Sterilizing

In present paper, the acetylcholin esterase inhibition technology was used to study the effect of potassium ferrate (K₂FeO₄) on degradation of dichlorvos which was chose as the representative compound of organophosphorus or carbamates pesticide. It is found that CO₂ could be used as a neutralization agent to wiping off the remaining ferrate and keeping the pH value to be the optimal pH value (pH 7-8) for the acetylcholin esterase inhibition technology. Based on the linear relationship between the concentration of dichlorvos (p) and the activity of enzyme represented by the absorbency difference in 3 minutes (AA): AA = — 0.1096lg P +0.2227, the effect of potassium ferrate on degradation of dichlorvos was measured, that is after being treated by 800 mg/L potassium ferrate for 15 minutes, the content of dichlorvos decreased from 80 mg/L to less than 0.05 mg/L.The effect of potassium ferrate or/and the co-operation with other...