高效液相色谱法检测福美双在蔬菜及土壤中的残留

Determination of residual thiram in vegetable and soil samples by high performance liquid chromatography

利用衍生化原理,建立了用来测定黄瓜、番茄及土壤中福美双的高效液相色谱残留检测方法。结果表明,在黄瓜、番茄和土壤中福美双的添加浓度在0.05～2.0mg·kg-1范围内,平均回收率分别为74.3%～93.9%、85.7%～102.0%和83.5%～101.8%,变异系数分别为0.7%～6.3%、1.8%～4.5%和1.6%～5.3%,均在农药残留测定所允许的范围内。该方法的最低检出限(LOD)为0.02mg·kg-1,最低检测浓度(LOQ)为0.05mg·kg-1。

A method was developed for the residue determination of thiram in cucumber, tomato and soil samples. The average recoveries of thiram in cucumber, tomato and soil samples at 0.05-2.0 mg·kg^-1 fortification level were from 74.3% to 93.9%, 85.7% to 102.0% and 83.5% to 101.8%, respectively, the coefficient of variation was from 0.7% to 6.3%, 1.8% to 4.5% and 1.6% to 5.3%, respectively. The limit of detection （LOD） was 0.02 mg· kg^-1 and the limit of quantitation（LOQ） was 0.05 mg·kg^-1.