摘要
采用高效液相色谱法(HPLC)测定了10%吡虫啉可湿性粉剂在葡萄上的残留动态和最终残留量。结果表明:平均添加回收率85.20%～95.64%,相对标准偏差3.74%～6.87%。最小检知量0.5ng,在葡萄中最低检出质量分数0.01mg/kg,吡虫啉用量分别为30、60ga.i./hm2时,在葡萄上的降解半衰期分别为4.29、4.02d。用推荐剂量和加倍剂量在葡萄上各施药3次,末次施药后14d残留量均低于0.20mg/kg。
the final residue amount and dynamic degradation of imidacloprid 10% WP in grape were determined by hPlc. the average recovery was 85.20-95.64%, and the standard deviation was 3.74-6.87%. the lowest detection limit of instrument for imidacloprid was 0.5 ng, and the minimum detectable concentration in grape was 0.01 mg/kg. the degradation half life of imidacloprid in grape for the recommended concentration of 30 and 60 g a.i./ha were 4.29 and 4.02 days respectively. grape was treated 3 times with two concentrations of imidacloprid, and 14 days after the last application residues in grape were all below 0.20 mg/kg.
出处
《农药》
CAS
北大核心
2009年第9期672-674,共3页
Agrochemicals
基金
北京市科技计划项目(Z09060500600906)
北京市科技计划资助项目(Y0705003041531)
北京市教委"设施新生有害生物防控技术研究平台
PXM2008-014207-055164"
关键词
吡虫啉
葡萄
消解动态
残留
imidacloprid
grape
dynamic degradation
residues
