Effects of different activity alumina on purification of esfenvalerate
2005
Wang Jin, Hua Rimao, Yue Yongde
Chinese. 顺式氰戊菊酯在甘蓝上的残留试验,参照国标方法(GB/T14929.4-1994),用氧化铝柱(3%水脱活)净化,净化后顺式氰戊菊酯的色谱峰为分叉峰,无法进行定量分析。为找出分叉峰出现的原因,对顺式氰戊菊酯残留检测中提取、浓缩、净化等步骤进行验证分析。结果表明,在柱净化过程中,高活度的氧化铝会使顺式氰戊菊酯产生分叉峰,当氧化铝以8%水脱活,过氧化铝柱后的顺式氰戊菊酯峰形对称,平均回收率达96.7%,变异系数为5.87,在甘蓝样品的添加回收实验中,满足残留分析要求。
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