We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
呋虫胺及其代谢物UF和DN在水稻上残留行为及其储存稳定性.
- Authors
杜月梅; 高丽萍; 邵华
- Abstract
【Objective】 To explore the storage stability and residual behavior of dinotefuran and its metabolite UF and DN on rice, and carry out the standard residue field test of furoxime on rice in Shanghai, Anhui and other 12 places.【Methods】 The samples were extracted by acetonitrile acetate, and the supernatant was purified by dispersed solid phase extraction and detected by membrane, liquid chromatography-mass spectrometry.【Results】 The results showed that the average recovery rate of furoxime in rice was 86.8%-97.5%, the relative standard deviation (RSD, n=5) was 1.6%-6.9%, and the average recovery rate of UF was 9%. The average recovery-DN was 86.1%-97.8%, the relative standard deviation (RSD, n=5) was 1.5%-7.0%, and the quantitative limit (LOQ) was 0.05. The minimum detection was 2.5×10 -11. The final residue test showed that: 20% furoxime water dispersible granule, the dosage of preparation was 40 g /hm² (120 ga.i/hm²), the application time was 2 times, the application interval was 10 d, the harvest interval was 14 d and 21 d, residue of furoxime in straw and rice was less than 0.5 mg/kg; and the residue of metabolites in straw and rice was less than 0.2 mg/kg, which respectively met the requirements of our country for the residue limit of furoxime in rice. Stability test also showed that furoxime and its metabolites were stored stably in -20℃ refrigerator.【Conclusion】 The data measured by this experimental method are in line with the requirements of China's limit of the residue of pyridosamine in rice, the storage of experimental drugs in the refrigerator at -20℃ is stable, indicating that the test data is effective, therefore, according to China's maximum residual limit on rice, it is recommended that 20% of the water dispersants of pyrethroids, the dosage is 40 g preparation / 667m² (120 g a.i/hm²), applied in rice most twice, a safe interval is 10 days, and a safe harvesting interval is 14 days.
- Publication
Xinjiang Agricultural Sciences, 2022, Vol 59, Issue 3, p663
- ISSN
1001-4330
- Publication type
Article
- DOI
10.6048/j.issn.1001-4330.2022.03.016