【摘要】 采用Spherisoib 5μ-C18色谱柱建立以乙腈:水为流动相的高效液相色谱条件,测定了吡虫啉在番茄及土壤上的残留动态。结果表明:吡虫啉在番茄及土壤上的添加回收率分别为84％～120％,80％～100％;原始沉积量分别为0.12～0.22mg/kg,0.21～0.62mg/kg;半衰期(t_1/2)分别为0.7～6.3d,8.2～25.0d。更多还原

【Abstract】 Residual dynamics of imidacloprid in tomato and soil were determined with HPLC, using a spherisorb 5μ-C18 column and acetonirile and water(30:70) as mobile phase.A method for the pretreatment and analysis of samples was established. The results showed that recoveries of imidacloprid in soil and in tomato varied from 80% to 120% ; half-life of imidacloprid was 8.2～21d.更多还原