China Agricultural University, College of Science, 100193 Beijing, China.
Bull Environ Contam Toxicol. 2011 Mar;86(3):319-22. doi: 10.1007/s00128-011-0203-5. Epub 2011 Feb 3.
A simple, quick and reliable residue analytical method for flusilazole in apple and soil was developed in this study. The samples were extracted with acetonitrile and determined by liquid chromatography with UV detection. The LOQ of the method was 0.02 mg/kg. The dissipation dynamic and final residues of flusilazole in apple and soil were studied using field trial method. The results of residual dynamics experiment showed that after the apple was treated by flusilazole at treble of recommended high dosage (3.75 g/kg H(2)O), the half-life times of flusilazole in apple and soil were 4.23-7.77 days and 3.04-5.14 days, respectively. Residues of flusilazole in apple at harvest time were all below 0.05 mg/kg at both recommended high dosage and 1.5 times of recommended high dosage.
本研究建立了一种在苹果和土壤中氟硅唑残留的简单、快速、可靠的分析方法。样品用乙腈提取，用紫外检测的液相色谱法测定。该方法的检出限为 0.02mg/kg。采用田间试验法研究了氟硅唑在苹果和土壤中的消解动态和最终残留。残留动态试验结果表明，苹果用氟硅唑三倍推荐高剂量（3.75g/kg H(2)O）处理后，氟硅唑在苹果和土壤中的半衰期分别为 4.23-7.77 天和 3.04-5.14 天。在推荐高剂量和推荐高剂量 1.5 倍处理下，收获时苹果中氟硅唑的残留均低于 0.05mg/kg。
