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- W2378386466 abstract "In order to definitude environmental safety and establish safe application standard,residue dynamics and final residue of acephate and its metabolite methamidophos were comparatively studied by the method of gas chromatography in open field and greenhouse vegetables.Meanwhile a safe application method of the insecticide was developed to provide a guidline for application of acephate in field,and to refine and update the residue data which was helpful to determine the harvest interval.The results showed that when the 30% acephate(EC) was applied one time by the dilution with 1∶1 000 and 1∶500,the half-lives of acephate in pakchoi were 2.060～3.203 d,respectively.The half-lives in greenhouse were longer than that in open field,which implied that acephate in greenhouse was more slowly degraded than that in open field.Acephate could be metabolized to methamidophos in the process of degradation,and the residue of methamidophos resulted from both degradation and metabolism.There was a distinct peak of methamidophos residue after several days of treatment.With the application of acephate on pakchoi,there could be a high methamidophos residue risk,and there was a higher residue risk under greenhouse conditions and higher concentration of the pesticide.It′s suggested that it should be careful to apply acephate on leafy vegetables.The safe interval of acephate should be extended to 21 days before harvest,and the quality of the products will meet the minimum requirement level(MRL) on pakchoi of China.The application of acephate is not recommended under greenhouse conditions." @default.
- W2378386466 created "2016-06-24" @default.
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- W2378386466 date "2011-01-01" @default.
- W2378386466 modified "2023-09-28" @default.
- W2378386466 title "Residue Dynamics of Acephate and Its Metabolite Methamidophos in Pakchoi" @default.
- W2378386466 hasPublicationYear "2011" @default.
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