摘要
【目的】建立一种测定番茄及土壤中菌核净残留的分析方法。【方法】样品经丙酮提取，二氯甲烷萃取，Florisil柱净化，最后采用高效液相色谱测定。【结果】方法在0．01052～5．26mg／L范围内线性关系良好，菌核净在番茄和土壤中的最低检测质量分数均为0．05mg／kg；添加回收率分别为79．97％～109．84％；变异系数分别为1．91％～10．55％。【结论】建立方法的灵敏度及精密度均符合农药残留分析的要求。
[Aims] The HPLC method for determination the residue of dimetachlone in tomato and soil simultaneously was developed. [Methods] The residues were extracted from samples with acetone, extracted by dichloromethane, purified by florisil column, and finally detected by HPLC. [Results] Good linearity was obtained in range from 0.01052 to 5.26 mg/L. The minimum detectable concentration of dimetachlone in tomato and soil sample were both 0.05 mg/kg. The recovery rate were 79.97-109.84%. The variation coefficient were 1.91-10.55% respectively. [Conclusions] The study results indicated that the sensitivity and precision of this method both meet the technical requirements of the residual analysis.
出处
《农药》
CAS
CSCD
北大核心
2013年第4期275-277,共3页
Agrochemicals
基金
农业部农药残留项目(NR2010F125)
