Safety Evaluation Of Organophosphorous Pesticides Pollution Of Vegetables And The Influence Of Pesticides To Soil Respiration In Urumqi

The results, which were obtained by investigation and assessment on organophosphorous pesticides pollution of Urumqi's routine vegetables and non-polluted vegetables, and test the experimentation that influence of pesticides to soil's respiration of CO2, were as followes:1. The eligible rate of non-polluted vegetables is 97%,and routine vegetables is 86.7%.2. In between routine vegetables, exceeding standard rate of pesticides residues of different vegetable kinds is: Leaf vegetables > Broccoli vegetables > Cabbage vegetables > Melon vegetables.3.The exceeding standard rate of routine vegetables: dichlorvos > chlornyrifos >methamidophos>phorate.4. The exceeding standard rate of summer vegetables is 15.7%,winter vegetables is 10.5%.The average rate of exceeding standard rate is 13.3%.5. With MRL, the result indicates that the most amount by edible vegetables coming into body,thus it can be seen the ingest amount of nine organophosphorous pesticides far from ADI. It explains that it is safe comparatively by edible vegetables in our daily life.6. Four organophosphorous pesticides(dichlorvos,chlornyrifos,methamidophos,phorate)bring activation to field soil.7.Except phorate and 1 mg·kg-1,10 mg·kg-1 dichlorvos,they bring activation to shed soil, the rest bring inhibiting effect.8. The dichlorvos of four chroma comes into inhibiting action.9. Except 1 mg·kg-1 methamidophos,it brings activation to shool soil, the rest bring inhibiting effect.10. Except 100 mg·kg-1phorate, it brings inhibiting effect to shool soil, the rest bring activation.11. Except 100 mg·kg-1chlornyrifos, it brings inhibiting effect to shool soil, the rest bring activation.12. With toxicity evaluation,except 1 mg·kg-1dichlorvos,phorate and chlornyrifos,they produce middling harm to animalcule of farm soil,the rest different kinds and chroma pestcides bring lower or zero harm to soil animalcule.