加速溶剂萃取—固相萃取净化—高效液相色谱法测定玉米作物中多环芳烃含量

Determination of Polycyclic Aromatic Hydrocarbons in Maize Crop by Accelerated SolVent Extraction Coupled with Solid-phase Extraction Cleanup

建立了加速溶剂萃取—固相萃取净化—高效液相色谱测定玉米作物中15种多环芳烃的方法,优化了试验条件。方法线性关系良好,15种多环芳烃的检出限在0.003 8~0.079μg/kg之间,空白加标试验的相对标准偏差在3.9%~11.7%之间,基质加标回收率在69.3%~115.3%之间。实际样品的测定结果表明,该方法分离效果好,能够满足玉米作物中多环芳烃分析的要求。

A method was established by high performance liquid chromatography determination of 15 polycyclic aromatic hydrocarbons in corn by accelerated solvent extraction purify coupled with solid-phase extraction cleanup after detective condition was optimized.The linear relations between absorption value and each polycyclic aromatic hydrocarbon mass concentration were good,and detection limits ranged from 0.003 8 μg/kg to 0.079 μg/kg.The relative standard deviations of blank standard addition ranged was from 3.9% to 11.7%.The matrix spike recovery ranged was from 69.3% to 115.3%.The results of actual samples determination showed the method has good effect of separation and satisfis the demand of maize analysis.